We arrived at the end of the "season" - actually after the season - and virtually had the place to ourselves. Steeped in history, what remains of the original castle is fascinating. We stayed in an apartment and it was accommodating - reasonably clean and comfortable for a 2,000 year old place! Expansive grounds could use some sprucing up, but I will give them that it was at the end of the season. Free wireless internet was spotty at best - had to go sit outside to connect.
The restaurant is nice but serves only the castle's wines (it is the headquarters for a vineyard). Since we were the only ones eating there we had only what the chef had prepared that night, which was good but offered no selection.
We were excited about riding horses at the stable on-site, and made arrangements for this after our lovely wine tasting. Unfortunately a communication breakdown within the staff left us standing at the stables with no horses to ride.
Overall an interesting stay on our 2 week trek in Tuscany.