My stay in Wolfgang flat (in a really quite building in a safe residential neighbourhood of Wien) was perfect! It is at only 15'/20' from the city centre, with Spar supermarket at 100m -permits to have want you want to drink/eat easily!-, a bakery just at 1 block of distance that remains open until midnight all week and the metro stations at only 10' walking from the flat.
The room is equipped with a comfortable double-size bed, a table and a cooking-corner with a sink, fridge, microwave, nespresso macjone and Tea boiler, perfect for the breakfast in-home! Very nice (and clean!) also the bathroom and the toilette. I really suggest Wolfgang flat!