We've just had a 4 night stay at Unsölds, the hotel is an easy 3 minute walk to the nearest u-bahn station, or a 15-20 minute walk into Marienplatz, and to the Frauenkirche, Hofbräuhaus etc.
The hotel itself has a great modern vibe, really clean and well presented rooms and exceptionally friendly service from all the staff, particularly Yonko in the bar! It was the perfect base for exploring this beauful city and wouldn't hesitate to recommend to anyone looking for a great place to stay in Munich!