We rented the entire guesthouse for three days over New Year's. Four couples and three dogs had a wonderful, relaxing time at the Navarro Mill Guesthouse. The house is spacious, with huge windows and a lovely wood-burning fireplace where we made s'mores, sipped hot chocolate and drank plenty of wine. At night, we could see the Milky Way from the front porch before heading off to our cosy, clean rooms, which looked exactly like the photos. We also made good use of the fully-stocked kitchen and the cast-iron pots and pans were perfect for hopping john and pancakes on New Year's day.
The Navarro General Store is under a ten-minute walk from the house if you take the paved road, and a two minute walk if you're willing to climb up from the creek and can outrun the neighbor's small and disconcertingly-fast dog. It has a deli and a small local wine selection, and is stocked with basic groceries and toiletries. There's also a short path to nowhere that runs by the creek where you can see a super cool rusted-out car wreck from the 1930 or 1940s. We visited the Anderson Valley Brewing Company, a twenty-minute or so drive away, where we sampled some beer, fed the goats and played frisbee golf. Unfortunately, we didn't have time to visit the redwoods (apparently there's a pygmy forest nearby!) and the many vineyards in the area.
Although we did not get to meet Dennis and Lesley, they were very responsive by email and phone and were accommodating of our dogs and check-in/out times. They do have a cat (Boots, I believe), who was not around while we were around, but whose lingering presence those of us with cat allergies could feel - the house was spotless but cat hairs are invisible and persistent, so just be forewarned if you're allergic.
I'd love to go back!