I had a good stay with Motel One München @ Sendlinger Tor. The room was really clean, very comfortable and the staffs were very nice and helpful.
I had the breakfast for the 2 nights stay and it was a good one, a good choice of Meats, Bread and Coffee however for both days, i saw the same food, there was no changes in the choices on both days.
However, the room heater wasn't working when i there, but since it was in a comfortable temperature for me when i was there, i was okay with it and didn't inform the staff but i can imagine needing to change the room if the room heater wasn't working when the weather is much colder.
The Hotel location is great, walking distance to most of the sights, felt really safe in the area too.
I would recommend staying here if it is your first time in Munich.