We spent a week in this apartment in December. The heat and hot water were excellent, the kitchen was large and useful, and 2 couches were extremely comfortable, the bedroom large and comfortable, the bathroom excellant, and piano was in tune!
Of course the views were tremendous, the church bells romantic. Most of the facilities in the area were closed (wineries, farm-stays, restaurants) but we did fine one winery to tour north of Greve, and the butcher shop was open as well as the associated restaurant which was excellent. The lack of other tourists offset the shortage of places to visit, but then there is only so much time in the day! The town market on Sunday was fun. We enjoyed driving on the back roads of this area due to the ever-changing sun-lit views.
Panzano's location is centrally located for exploring Tuscany by car. The town is large enough to have all of the necessary services, but not large enough to be overwhelmed by "modern" Italy,