Solage Calistoga is a lovely spa/resort hotel. The property itself is a 4....very nice but short of the best of the best (that would rate a 5). The rooms (which are individual buildings called studios or suites) are plain...almost army-barracks simple on the outside, but contemporary, well designed and very comfortable on the inside. The common spaces are Napa-simple, wood and environmentally-friendly.
The service is a 5, The Spa is world class. Outside each room are two cruiser-type bicycles for getting around the property, or taking into the nearby town of Calistoga, And there are three spectacular new Mercedes convertibles that you can take on a first-come-first-served basis. No charge. The Solbar restaurant and bar is top notch. If you want to know where something is on the property, and you ask a staff member, instead of telling you how to get there, they will drop what they are doing and take you there themselves.
Of course, Solage Calistoga is a great base-camp for winery visits, and the helpful concierge staff can set up everything....tours, transportation, restaurant reservations, you name it.
Helpful hint: The Charles M. Schulz Sonoma County airport in Santa Rosa (STS) is an easy half hour away. Alaska Airlines has non-stop service from Seattle, Portland, Los Angeles and San Diego. Super easy airport to get in and out of, no big TSA lines, rental cars 100 feet from the building. If you don't want to do the hour and a half to two hour drive from Sacramento, Oakland or SFO, consider flying into STS,