The host was very nice and communicative.
The flat is pretty good for its price. Obviously you can't expect anything luxurious, so the furniture and bathroom were quite old.
Even the apartment is just for 1 guest Elisabeth allowed me to stay with my wife with no additional fee. The bed is not that small, so it was comfortable enough for two. We were the first guests, so all the bed sheets and blankets were new.
The location is great - 35mins walking from the city center, 15-20 mins of walking from Belvedere Palace.