That is a great area where you can do many things without driving too far. Depending on weather...
- Chiemsee / Schloss Herrenchiemsee

- Walking: Simssee (nice Restaurant Simssee Stuben) and up Ratzinger Höhe or other direction Schliersee and on to:
- Mountains Bayrischzell / Wendelstein Peak (Cable Car)

- Town: Rosenheim or of course Salzburg for a day trip
- small old town: Wasserburg am Inn

- dinner locations: in Rosenheim many; countryside and worth a visit: www.hirzinger.eu

Let me know if you have further questions, I am a regular in this area...