There is a very neat place in Yountville to stay at called Maison Fluery. Its part of the foursisters chain of inns.
Its not going to be a fancy place but it is litterally behind Bouchon which I find is average compared to Bistro Jeanty. But walking distance everywhere.
They have a small pool, outdoor hot tub for about 10-20 people, great breakfasts, bikes to ride anytime, and the best of locations. Plus from their roof top deck you see vineyards everywhere. Rooms are a bit on the quaint to slightly worn style but its very cozy. No TV's in most rooms. But if you need TV in napa there is something wrong. They do have wi-fi so that was good.
Here is a link:
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I felt like I was in France. GREAT PLACE.