Overall, we had a nice stay at Hotel D'Alex!
We were 4 total (2 couples) - one bedroom is much bigger than the other, which didn't matter much to us, but might if you need more space for luggage, etc. As is typical, there is no AC, but gets good ventilation with windows open. Unfortunately it was pretty hot when we were in town, and the fan in the small bedroom was broken (and not fixed during our stay). To add to this downside, since the flat is a basement level, the one window in the small bedroom opens up to a dirty concrete, grated enclosure.
That aside, everything else about the flat was clean and as expected!
The location is ok - It is a very quiet, residential neighborhood, not walking distance into central Munich, but it is convenient to the S and U-Bahn, as well as the central train station.