Spacious apartment which is more than enough for a group of 4 adults. The place is clean and tidy, equipped kitchen and bathroom. Self-check-in is very convenient especially when we arrive late night. Communication with the host is quick and easy. We didn't meet the host in person, but they have a very useful "guidebook" in the apartment which listed out lots of local tips about restaurants, traffics, tourist attractions. We tried one of the restaurant they suggested and it's perfect! Love this place and will definitely stay again if we come back to vienna.