My friend and I had a nice stay here. Location is fantastic. The flat is situated close to everything you'll want to see. The heat is great and the bed is comfortable (I do wish there were a few more pillows or that the pillows were more comfortable).
The art pieces in the flat were a really cool, personal touch. As other reviews said, the flat can be quite noisy, so bring earplugs if you are a light sleeper. I usually sleep with earplugs anyway, so it was not a problem for me. This is a great option for ravelers on a budget who want prime location. I would definitely return.