San Francisco, California
Tour was good but there is lack of clarity on the itinerary, what is included and what not.
For instance I spent the night outside of the valley, having to take a regular bus 40' down the valley while by the itinerary explanation it seemed that accommodation was in the same valley.
Same happens with the trip which seems to be fully guided while in fact you have spare time (at least in winter).
My recommendation is to clarify the itinerary and palce to sleep before booking.