The location of these 2 Villas, Sol and Luna are definitely out in the country so it's rather remote. We stayed in the villa Luna which was clean although a bit spartan when it comes to being equipped. There is a lovely pool area with great outdoor lounges and chairs. We had a fire one evening and watched the lights come on in the part of Siena that you can see in the distance, sipping some wine, quite lovely!
The Villa was a bit dark, quite a few light bulbs either burnt out or not functioning and only a single roll of toilet paper in the bathrooms, only one kitchen towel and a very tired sponge for dishes. A bit more attention to those details would have been appreciated as it is rather remote. I think the owners may be gradually updating and improving it.
Although the bus does run relatively nearby, a quarter mile walk to the stop, you need a bus ticket or you face the displeasure of the bus driver. The telephone taxi worked much better and is the way to go for getting into Siena. The price is about the same if you have a party of 4 and haven't purchased a bus ticket in advance.
Luna has a nicer big kitchen but Sol has a much nicer livingroom, dinning area. You need a car if you stay here.
The Conventino area is beyond lovely for walking about and the La Lastra vineyard nearby does a marvelous wine tour in the afternoon.
This is a simple place with history and wonderful restful ambiance, that could be absolutely wonderful with a bit more attention. It's a lovely escape but sort of "bare bones".