Our group of five spent 8 nights at Bettina's apartment and very much enjoyed our stay! The apartment had a great location and was an easy few minute walk to the UBahn which was then only 2 stops to the central train station (& SBahn) and another 2 stops to Marienplatz (with one line change). It was located down a quiet street but still had several cafes, restaurants, and shops nearby.
We fit comfortably for sleeping in the apartment with two each in separate bedrooms and one person on the sofa in the living space. We were only there to sleep at night so it worked well for us but if spending more time there it may have been a little crowded with five people. It had such a charming vibe with decorations from around the world and bookshelves full of travel guides - definitely puts you in the mood for travel! The kitchen was furnished with any necessity, though we were out each day so didn't use it besides basics like cups/water. There was also a small balcony overlooking a quiet courtyard. There is a spot to sit out there but as it was cold in February, we didn't use it!
Bettina was an excellent hostess! When booking, she responded promptly to any questions we had. She met us at the apartment for check-in and gave us plenty of tips for our stay and a map of nearby restaurants/cafes as well as having some Munich guides and references available.