Gorgeous old fortress type building with absolutely breathtaking rooftop bar. The rooms were modern. The staff, while dealing with a worldwide cybersecurity issue, were so patient and friendly despite clearly having a lot of additional stressors. There was delicious kolsch upon arrival with little snacks. Subway is about a 2 minute walk from the door. The hotel itself is set back very private and safe. For the pricepoint, I don't think there's any place in Koln that can beat this.

We stayed here for business trip.(4-stops away from Köln Messe, very convenient.) Breakfast was great. Very unique building, staffs were all helpful, quiet neighborhood. Only tricky thing was that we had a few stairs just before the room and it was dark.(after lift) Overall satisfying stay

Overall a very nice property, conveniently located, with courteous & helpful staff.

The hotel was fabulous and the staff so attentive. They realized it was my birthday from my passport and brought me cookies and a card and offered us free breakfast. I would absolutely stay there again.

Our second time in the hotel. Still really interesting hotel and the roof top bar is great. The only thing is we had a room where a bed was upstairs (up the smallish metal spiral staircase). I'm sure younglings would think it an amazing room but for middle-aged or older people with mobility issues kinda unpleasant. So make sure to let them know when booking.

Fantastic hotel , beautifully designed with great extra touches such as free Gluwein and cakes . Very warm welcome from helpful staff.

Air conditioning was broken in first room (not cooling below 24.3C) and if you opened the door all rooms in that floor could access your room because there are no divisions in the balconies. The fridge did not work either, the solution was to take it out of the furniture and put it in the middle of an already small room. Did get moved on the third day to a similar room with working ac for one night, the second night it did not cool below 22 C. While in the city not much attractive in close vecinity. Bar upstairs was nice on the other hand.

It was a wonderful stay in a unique setting. Beautiful roof top and stunning 360 degree view over Cologne.

Lovely repurposed old water tower, and our room on the 9th floor had a great view up to the cathedral. The hotel isn’t in that great an area, but you can get into town on the metro stop (Post Strasse) almost next door. The interior of the building is interesting and you can get free tea/coffee/bottled water in the comfortable lounges downstairs. There is a bar on the top floor, but it was quite noisy, so not a peaceful place to enjoy the view!

Just want to say thank you to Arthur for his help in finding another room, if a smaller one, for us at 1:00 a.m. because the AC did not work in the bedroom part of the originally booked Junior Suite.

the breakfast and interior design are good.

The room was ridiculously hot and they couldn't turn the heating down. The shower went from hot to cold every few seconds. They told us breakfast was until 11am which was Sunday's only so we missed Monday. Area was a bit sketchy.

The water tower's been beautifully redesigned into a hotel. Rooms and beds are super comfortable.The roof top bar is excellent. Can't wait to stay here again!

They had a wedding and the hole hotel was jammed. Because of that the elevators were too busy and the roof bar was not operative This is a boutique hotel and the hole experienca was ruined

Overall Wasserturn is an impressive building and the rooms are modern and clean. However our bathroom had a plumbing issue and despite repeated requests it wasn’t fixed during our stay, nor was an alternative option offered. Considering the prices are in the region luxury I would’ve expected a lot more. Also service in the Botanix bar was really poor, which was really disappointing given that this was a special birthday we were celebrating.

Where to start. Seemed as though every day had an unpleasant surprise. First day No AC. Staff came to room. Maybe this will fix it. Return after dinner. No AC. So they said those aren’t renovated rooms. AC doesn’t always work. So they moved us to a better room (appreciated) with good AC. By the way the front desk takes outside calls with lengthy questions. Phones don’t work in the rooms so if you have a problem take the elevator downstairs and stand in line. Showed up to breakfast next morning 9:30 (It ends at 10). Not much left. For example, one piece of melon left. No replenishment. New towels but indifferent cleaning and no water replenishment that day. Following day returned 9 pm. No cleaning at all. Towels on the floor. They got the supervisors to clean, provide new towels and replenish to water in the minibar. Ironically as we were about to leave final morning, room cleaner showed up. Hotel is in a strange area. 15 minute walk to lots of things but nothing useful close. By the way, the roof bar will always be open tomorrow. So we never saw it. I get it. Corona. Staffing problems. But we stayed at other chain hotels: a Radisson in Mannheim, a Hyatt in Mainz and a Hampton by Hilton in Kaiserslautern. (Visiting friends). All provided convenient stays without repetitive really unprecedented inconveniences. Boutique hotels did better.

It's a very unique hotel with lovely outdoor areas to enjoy.

Hotel is amazing with relaxing atmosphere. Room was wonderful and peaceful to sleep. I loved the breakfast and that sedative atmosphere in breakfast room. You could here birds singing and start your day with healthy and wide selection. I highly recommend this hotel.

The building itself and the interior are beautiful, and the concept is really cool. But the service is severely lacking. - Upon getting to my room, I was hoping to be able to make a coffee. The room comes with Nespresso pods... but no Nespresso machine. I had to get that from room service. - On Sunday night after returning from dinner, I asked the front desk what time the hotel bar closes. He said it was closed then, but it would be open every other night during my stay. Monday night I go to head up to the bar, and the elevator button doesn't work. Turns out the bar is actually closed for renovations... too bad, it looks great in the pictures. - On Monday, I left the "please clean room" sign on the door from 8:30am, and it was still there at 4:30pm when I returned to the room. No one cleaned, and we had to ask them to clean while we were away at dinner. - On Tuesday, we didn't leave the sign up, but they still didn't clean the room. Oddly... they had come in the room while we were away, and they left the key card, but they didn't actually clean. - Also on Tuesday, after having been at the hotel for 48 hours, they locked me out of my room. After going to the front desk, they said that I had only paid for two nights. I proved otherwise, and they said that someone had actually forgotten to check me in, and that it registered me as a no-show. How is that even possible?

Lovely hotel. Particularly impressed with service of Claire who noted it was my birthday and left a lovely card. Much appreciated and very nice of them.

Great hotel. Slightly out of the way but a beautiful building with some great views. Rooms look nice but are a little dated and very disappointingly don’t have power next to the bed which in this day and age is unacceptable

Very Friendly staff, the hotel is well placed on a quiet road, close to the railway station

Unique property with excellent views of the city. Convenient location just 3 stops from Main Station.

Sad, that restorān opened only in evenings

Amazing building, large room, sadly nothing else matched that.The rooms were dirty and down at heel. It felt like it was last refurbished in the 1980s. Rather cheap coffee machine that was not stocked up. The large window had gaps in it, letting in the cold. Uncomfortable furniture, stained carpets. Difficult shower. Unreliable WiFi. And most annoyingly, terrible lighting! No lighting from the ceiling, instead 3 ambient floor lights. In winter practically impossible to see anything or read. We had to keep the TV and bathroom lights on for some extra illumination. Reception seemed oblivious to customers.

The hotel, in a Water Tower, was beautifully decorated, the building itself was fascinating as it was in the round. The view from the restaurant / bar at the top was fantastic. The beds were very comfortable and the room was clean and tidy. The staff were very friend;y and helpful and gave good advice for tourist attractions etc. Would happily recommend to others as it was easy to reach by taxi and the public transport

Lovely location with unique charm and well located

We stayed in a Premium Double Room, which had great city views. The room was very spacious. The walk to the old town was a good 15 minutes. Disappointed that although I had stated in an email that our trip was to celebrate my husband and my birthdays therr was no mention of this during our stay.

A nice hotel with huge rooms. The service is great but the bathrooms are old and need a face lift. The water is incredibly hot so be careful not to burn yourself in the old showersThe building has superb city views however the roof terrace is now shut indefinitely until the new owners decide what to do with the space.

Really neat hotel worth just wondering around on each of the floors. Some of the upper floors offer great views of the city.

Amazing hotel, good food, nice big rooms, but very hot ( when it is hot weather as it was for our staying) and no air codition, nice staff

Great hotel, very nice staff, great location but the room (particularly the bedroom area on the mezzanine) was very hot as there is no air conditioning and poor natural ventilation.