It was really a pleasure to be a guest in B4 Sunrise apartment. It is really close to city center and also to the underground. Free private parking is definitely a big plus in this city. Wolfgang and Dita are very flexible about check-out time (if there is such possibility of course). We received all important information about restaurants, city center, underground, trams, etc. The apartment itself is really spacious and very clean. Neighbourhood is calm and quiet. There is also a nice CD collection there. I recommend the apartment, but first of all the host(s), for everyone who wants to visit Vienna.