I would recommend the Munich City Hilton. We stayed there in mid-November and we liked these things:

1. Free upgrade to a Junior Suite. It was quite large with a nice living area, bar, two big closets, robes and a spiffy bathroom with those cool soap tubes they use at German Hiltons. Hors d’oeuvres arrived at the door about 5 p.m. and bottled water was also complimentary.

2. Free breakfast. We were there on a Saturday night and enjoyed an amazing Sunday Brunch spread with sparkling wine, omelette bar, beer and those tasty Weiswurst and pretzels. Who needs an Exucutive Lounge when you've got a real brunch to chow on?

3. Location over the S-Bahn. This means a non-stop ride from/to the airport. Very nice.

I've heard good things about the Park Hilton in Munich but have absolutely no complaints about the City Hilton.

BTW, the rate was excellent, only about $90 USD. Definitely a keeper.