I spent two nights at the Munich Ren in late December on free Cat 4 weekend certs. As a Platinum, they upgraded me to a large two-room suite on the fourth floor and provided comlimentary breakfast buffet.

It is a nice hotel in a business area, although certainly nothing special. However, the breakfast buffet was outstanding! There was a carpark under the hotel (connected via the lift) but I don't recall the cost.

The U-bahn station is only a few hundred meters from the hotel. Its about a 10 minute ride to Marienplatz and the downtown area. Taxis back from downtown to the hotel run about 10-15 euros.