We had a delightful stay in Vienna. Due to some construction in the building, there was no hot water working. But the host was very upfront about the issue and communicated two different options to us (find another AirBnB or accept a significant discount and stay). We opted to stay. The communication with the host was exceptional so we had no worries about the arrangement. The apartment was great, it could be a little noisy in the morning as the street market was setting up, but we enjoyed having the market right there. It’s not particularly close to downtown but the #2 tram comes right by and the U-Bahn is just a short walk away.