Hamid's place was great. It is compact but has everything you need, including a small kitchenette. In the heart of the city, it is just a 5 minute walk to the main train station and to the subway that goes to the airport. Karlsplatz and Marienplatz are just a few minutes further- so much to see!
One small note on the shower- nothing at all wrong with it, but it's a capsule shower and might a bit small for some people. My friend and I are slim but tall (both 5'11/180cm) and I kept hitting my elbows. Keep that in mind if you are a tall and/or broad person!