We like the fairground RV Park in Calistoga which is 20-30 miles north of the city of Napa at the north end of Napa Valley. Calistoga is not as congested as the city of Napa and has a more picturesque or quaint Main street. The RV Park does not have many amenites but has full hookups at about half of their sites and water and elec at the others. Also, towering sycamore trees throughout the park which provide alot of shade on those hot summer days. There is a small golf course next to the RV park with some sites that backup to the course, very pretty. If a remember correctly, the sites were about $30 a night. Check out their web site.
www.napacountyfairgrounds.com Then click on RV Park.
BTW-Sterling Winery is only a couple of miles south of downtown Calistoga. They have an awesome tour, not to mention their great wine. The winery sits on top of a hill and is modeled after a Greek villa and you ride up to the winery in a gondola!!, breathtaking view.
Hope you enjoy your visit. We will go back up in October, hope we can afford the fuel to get there!!
Sharon