We were a little skeptical reading past reviews about the windows, and yes they are single glazed and the room on the street is quite loud, but the quality of the flat is amazing. Everything was to a high standard and was more than we expected it to be. It's a little odd that you can fit 8 people in here, but the kitchen seats 6 and the living room seats 5, but for us it wasn't too much of a problem as we weren't really at the flat.
The location is superb and Uber's are cheap anyway so not anything to complain about there. The 3rd floor definitely isn't for the faint hearted (literally) as the stairs are pretty steep.
Overall though, what a place!! The flat was perfect for what we wanted and is a really beautiful place to stay for the weekend.