We were a party of three. All of us think that this apartment is a very good place to stay in Vienna. Very conveniently located - walkable distance to all main sights, 5 minutes away from a subway station, sightseeing double decker bus (if you decide to take s ride) and airport express bus stops. At least two big grocery stores nearby. While being close to the historic city center, the apartment is very quiet, so good night sleep is guaranteed. Importantly, it's very clean. Dan is a great host - his responses were always timely and instructions clear and easy to follow. Totally recommend this place.