Location mostly and everything else.

Nothing

The first impression was simply the breathtaking view. The hosts know this strong point and that is why they left the curtains open for us :). We spent a lot of our time in on the balcony. The views are incredible and the furniture was comfortable. The apartment was fully equipped and everything we needed was there. The train and cable car terminal was just around the corner with some nice shops and a COOP. We also had our own private parking. It did not feel like renting a place; I felt like the hosts were sharing their home and life with me. We did not want to leave!

Nothing really. It was a wonderful experience.