Our stay was a bit problematic - the flat is rough around the edges and needs work to bring it up to standard. The quality of the windows is exceptionally poor (as in, you can put your finger through a hole in one) so it got very cold inside during our stay. The host also controls the heating and turns it off overnight, so you can't set it to keep it at the temperature you want. There is basically nowhere to store clothing, we had to use coffee tables, windowsills etc, and the furniture that is there was speckled with paint from building work. You will also hear practically everything going on upstairs, though that is more due to the age of the building.
Having said that, the kitchen and bathroom are both great, spacious and have all the amenities you need - the shower is also exceptionally good.
I hope the host can work to rectify some of these issues as they are halfway there!