I recently booked a three night stay at the Avalon for my wife and me who were visiting wine country with my brother and sister-in-law to celebrate our anniversaries together. This was our first trip to the area and we only considered B&B's...wanting to capture the romanticism and personal touches to such a pretty area.
We booked our rooms through the Avalon website without any issues. The innkeeper responded with a personal confirmation three days after we made the reservation. She (Hilary) included several local restaurants and other activities in her confirmation letter.
Navigating to the Avalon can be tricky...particularly if your car isn't equipped with GPS and even more so after dusk. But once you've arrived and drive across the creek on their own wooden bridge you'll be happy you selected the Avalon. The grounds are beautifully wooded with redwoods, a babbling brook and lush forest to drown out any distracting noise. To this point, Avalon has no operating TV's in the rooms.
My wife and I stayed in Guenevere's Tower; a private room above the garage. The room was warmly decorated, well lit and designed for travelers with plenty of closet storage. There is a separate reading area with a sofa, table and chairs and fully stocked bookcase. There is also a high-powered gas fireplace in the center of the room...capable of heating the room on a cold autumn night in an hours time. The bed was very comfortable with fresh smelling linens and blankets. Taller people will have a hard time in the bathroom; it is built on the angle of the roof and requires bending over for sink-access (I'm 5' 9"). The cast-iron tub has a great shower and plenty of hot water. Fresh towels were supplied every day.
Hilary has the main house set up for the constant stream of travelers she obviously entertains throughout the year. That is to say that her kitchen is very busy and has a 'beverage island' with every kind of tea and coffee condiment set out. She bakes cookies every day and puts out wine (red & white) every evening. She, her husband and her son are very friendly and a pleasure to talk with. She is a very good breakfast cook and obviously enjoys entertaining and extending hospitality to her guests. I've been to some B&B's that emphasize elegance and decor - Hilary and the Avalon put the emphasis on comfort and homey-ness. It may not be what everyone is looking for, but she does it very well.
Other amenities include a workout room, hot tub, 2-3 patios, internet access and a cell-phone signal amplifier (they're in a AT&T dead-zone). Hilary keeps refrigerators in each room stocked with water and soft drinks and leaves a Ghiradelli chocolate on the pillows at night. All nice touches.
The only reason I would not stay at the Avalon during my next trip to wine country it is that Napa Valley is a twisty-turny 1+ hour drive away. Sonoma has plenty of beautiful vineyards very close to Avalon to be sure...but driving back to Sebastapol after a full day of 'tastings' in Napa was something I am not likely to repeat.
Otherwise, I would strongly recommend the Avalon to anyone.