i second freising.
you can reach it easily by public transport: look for the bus to the "urlauberparkplatz P41 / freising bahnhof" (long term stay parking and freising main station). i think it is nr. 635. departs regularly, from the terminal 2 arrival level (7:34, 7:54,...), takes you 15 mins to the station, from there, walk up the hill... costs you roughly 2,50€ one way...
enjoy breakfast there and take a walk...