My one night stay was nice. I liked the style of the flat. It was nice to experience something different from the everyday life.
The problems I had were: whoever did the cleaning missed a pair of the previous guests underwear behind a bathroom door, a full dishwasher with no dishwasher pacs to start it and the walls seem pretty thin. I could hear the neighbors through the walls although, they were being pretty loud with their music and talking. You can also hear the traffic and sounds from outside too