Only downsides are that most closet space is already filled so you're left with only one with dificult sized drawers with a chair in front of it. And there's no vacuumcleaner, so there are always some crumbs and dust on the floor. Overall I really enjoyed my stay.
However, I did have some problems in the end with the owner. I stayed there with my cat and when I left there was probably some of the hairs left on furniture. The rest of the apartment was clean. So, in total the apartment was at least as clean as when I moved in, since there were hairs of the prior person in the bed, cut-off toenails in the bathroom etc. But here is where the problem started with the owner. He didn’t come when I left and then suddenly later, he sent me a message demanding ~60€ as a cleaning fee. I resisted, because on one side the apartment was not perfectly clean when I moved in either and on the other side the demanded fee was way too high. The owner insisted on this amount and started to threaten me if I don’t pay it immediately. I compared the price to the prices of professional cleaning services. I could only look at the one with information in English and I guess they were already above average, but they charged around half of that price for a whole apartment and this was only about using some sticky hair remover for the furniture. When I confronted the owner with the results from my search, he suddenly changed his mind and we made an agreement and I paid some amount just to settle this case. However, I wonder whether he is trying to get 60€ from every person that stays there and then only does the minimum cleaning and this issue could have been handled much better than in his aggressive way.