Matthaus was an excellent host and the apartment was great for my girlfriend and I for 2 nights. Matthaus waited patiently for us as we were delayed getting to the apartment and he clearly explained all the facilities in the apartment (in perfect English), as well as some of the local hotspots, such as supermarkets and a bakery just around the corner.
The apartment is in a great location for getting public transport into the city, the tram stops right outside the door, and it was exactly as the pictures show. The wifi had just been updated recently and worked very well. It was perfect for the two of us (we cooked in both nights and there was enough space). We would gladly stay again.