Martin is a great, helpful host, communicates clear and fast, explains everything. The check in and check out were easy with the lockbox, the apartment is small but very well equipped, you can find everything that is needed for a few days stay. The building itself is being renovated, but it has not been disturbing at all, and it was good to see that this old building will become much nicer when it is finished. The location is great, everything can be reached by tram or U-bahn fast, and there is also a supermarket in the street in one minute. I would recommend this place for a stay in Vienna.