You must have owned this property for a very long time or transferred a base year value to have your property taxes only be $1,000.
It's a poorly cash flowing property once you consider vacancy, repairs, and other expenses. I don't think of the Napa Valley as being near Sacramento. I would be cautious about outer ring Bay Area suburbs like the American Canyon area, which is about the nearest place to both Highway 29 and Sacramento I can think of. Appreciation will not be as strong as in closer-in communities. Vacancy over time will also be higher.
In your shoes, I would consider selling unless there is a good chance you will move back in and you don't mind the low ROI from the net rental income.