I know what you mean.
Having a great meal and wine and then driving back to Sonoma.
No Thanks.

Napa Valley Lodge. Right around the corner.
http://www.woodsidehotels.com/napa/
They have a couple big suites that are great.

Second choice would be the short drive north and stay in
St Helena. About 10 Miles.
http://www.harvestinn.com/index.htm

These are both 4 Star types. Very nice.
Since you are doing the Laundry I assume you want a great room.
Enjoy one of the best restaurants on this planet.