Agree with Mike and Desi.... and would definitely consider a property management company to
handle the rental for you... the fee is definitely worth the service... from personal experience I have found that Danielle Gularte at Crown to be excellent...
The rental market in Napa is very strong. I would reccomend going with a property management company that is not affiliated with a local sales brokerage. One option many of my recent clients have raved about is http://tinyurl.com/cch6r8t check in with them for a review of your property.
Your 3 bed/2.5 bath home is the perfect rental configuration is likely to do well as a rental.