We arrived very early in Vienna, and Wendelin was very helpful and responsive to the (random) messages I was sending him - even though he was at work. He helped us figure out where to store our luggage, with transit instructions, until his tenants from the night before left and the room was cleaned. Very helpful.

The apartment is very clean, and recently renovated. Simple, but with everything you need. WiFi was great.

Location is very easy to get to - and has a small grocery store across the street that we found very convenient. Took us about 7-10 minutes to get from the apartment to the front steps of the Stephansdom.

Only downside is the stairs going up to the room on the 4th floor - my wife is newly pregnant and was feeling it after a long day of touring around - but normal for Vienna anyway.