The flat is really nice furnished and also very well designed. The kitchen is ok-equipped (if you don't cook a lot it is enough) and it is really nice to have a washing machine, a dishwasher and a huge fridge. Also the beds are very comfortable and there are different pillow types.
However, the bathroom was almost catastrophic - when we entered the flat, all the rooms smelled like mold, which was really unfortunate. After having the windows open for the whole day and night, the smell was way better, but we had no chance in getting the smell out of the bathroom - and we left the window really 24/7 open. You also see some mold in the bathroom. Also, the bathtub (the only thing in the whole flat that is not renovated) is not at all waterproof - it has a big crack on the side, where water is getting out and we used a lot of towels to clean it afterwards.
The flat is in the last, the 3rd floor, without elevator and because of that a little bit warm, but we still never needed to use the AC.
The location is a little bit out of the center, but in a really cool neighborhood, it is around 7 minutes the hill up from the next metro station.