Alex and Karoline are truly good hosts.
Unfortunately, I was on a busy business trip and I couldn't share a lot with them but whenever I was home, they offered a drink or breakfast.
The room you get is nice, the bed is confortable, you'll find guide books if you're looking for ideas to spend your time at Munich.
You'll also receive very detailed specifications on how to get to the house from the airport or the train station and they will always be very responsive to your messages.
This was really an enjoyable experience for me and I would definitely check their availability if I ever go back to Munich again :)