Nothing that we didn't like at this property.
We didn't like the wasps though that were flying near the terrace tables (outside) and sometimes even inside while trying to eat your breakfast. But you don't have any reason to stop the nature from moving, isn't it? :)
Palazzo San Niccolò offers great accommodation conditions, a quite good breakfast and its staff is more than helpful.
It offers even access to two pools during your stay, one indoor & heated and one outdoor (too pity that we haven't got the chance to swim in any of them) and, for people needing a good WiFi connection even in their vacation, I have to highlight that I had a great internet connection at Palazzo San Niccolò.
On top of these, even if the hotel is located in Radda in Chianti's central square with limited access for card, the hotel staff guides you to park your car in a nearby car parking with plenty of space.
You have a nice feeling when you realize that all these important aspects are synced.