We have stayed here several times when visiting relatives in the area. The rooms are spacious and we really like the style of the hotel and the rooms. You really feel like you're at home (or where you'd want to live). I think it's contagious, as we've almost always had great people staying near us and strike up good conversation.
The breakfast in the morning there is really pretty good. After a couple days we do a mix of eat off the buffet and order things off the menu. The muesli stuff is a hit with our family.
The biggest thing for us is the service and staff. They are super friendly, professional, and will do anything to help. For example, we have a 2 year old and during our last trip we brought our own silverware for her to eat with. Not super bright on our part, it was a sentimental set from my wife's family. Anyway, it accidentally got taken by the busser when we weren't paying attention. They took the time to dig and they found it. One piece when we were there and they mailed us the other! That was really cool of them and it's much appreciated. Our family will use them as long as we're staying in Sonoma.