Nothing. We had a terrible experience.

We enjoyed a lot the island of Sao Miguel, but our stay at Coastal Trail Cottage was kind of a nightmare due to our daily encounters with several cockroaches (in the floor, in the kitchen sink, even one falling from the ceiling) -most of them half dead, but still a disgusting experience for our family with two children. We spent one week cleaning roaches inside the house. The owner said she was sorry and that the exterminator had sprayed twice in the previous two weeks, but didn't offer another remedy than keeping the doors closed in the eventing and sweeping outside so that the salamanders can take them. We told her that we believe the roaches come from the drains and that there is a sewer problem in the house: there was also some bad smell inside the house occasionally. Two days after alerting her, she came to the house and sprayed extra outside the windows edges and doors, but this didn't solve the problem. We think the owner should have at least told us beforehand that there was this serious problem in the house. We told her that she should have closed the house until the problem is solved, but she took it badly. The day we were leaving she said that she was very sorry for our experience and that they were looking for stronger pesticides, but she showed no empathy -and she recommended that we book a hotel next time we come to Sao Miguel!