We loved Birgit's place. Quite roomy and on the tram line. The beds were comfy and all the facilities to cook. No stand alone microwave but the oven served our needs. It is an easy walk from the Wien Mitte, has many supermarkets, bakeries, eateries and restaurants close by. It was an easy walk to the Stephanplatz, which is also reached by the no 1 tram out the front.
The tabac sold us a map but try and get one on arrival as this one was quite large. We would definitely stay here again as it had great access to the old town.