Public transport is easy, clean and efficient.

The Munich Park Hilton is OK, with an Executive lounge and free French Champagne, but not that central, being next to the Englischer Garten (park).

Visits to Lake Starnberg (on Schnellbahn metro line), Neuschwanstein Castle (Prince Ludwig of Bavaria's folly in the Alps that the Disney castle was modelled on), Andechs ancient monastery where they brew a strong dark bier, BMW museum and Olympic stadium and Olympia tower(metro), and on a more sombre note, Dachau concentration camp (metro towards Furstenfeldbruck)
http://www.munich-airport.de/english/index.htm