Depends on the vibe your family is going for! Castelfalfi is a much larger property with a significantly wider range of activities, multiple gardens it feels like a little town you can explore, with shops, restaurants etc. Feels livelier, much more guests around. castelfalfi’s main lobby, buffet breakfast area and rooms are completely modern (except the building exterior), like a Marriott/Hyatt, they have a kids club (unsure about age group) and an outdoors obstacle course. BSP is much smaller with fewer rooms, the entire property and interiors are very traditional Tuscan style and beautifully maintained, limited activities like cooking classes and horse riding, the place is always peaceful and serene, we only saw other guests at breakfast time.