Nice campground halfway between St. Helena and Calistoga giving you access to the Napa Valley at a very reasonable price. Not very crowded during the week, but weekends are usually generally full.
All of the sites are good though space 43 is awkward is you have a 25ft+ trailer.
It is open year round and unless it is raining hard the weather is good.
Hiking is very nice in the area except in 2020 and into 2021 due to the recent fires closing all the trails to protect the soil. If the trails open after the winter and spring rains it will be spectacular because of all the new growth. The fire damage in the campgrounds will be unnoticeable by summer next year.
Look out for poison oak!
Great place to stay at when visiting the Napa wine valley that is halfway between St Helena and Calistoga, two nice tourist towns. There are nice hiking trails in the park though they are closed currently (Dec 2020) due to the fire in the area. There was no damage to the campground even though the fire burned into the grounds. The weekends usually are full, it clears out Sunday evening so during the weekdays it is really nice. Staff are really nice. Be careful of the poison oak, it is prevalent there as it is so anywhere in Northern California.