We had a really good few days at Piramidi. It's well located, fairly near the ski lift and all the staff were friendly and accommodating (taking ski boots down to storage, helping excavate car from snow, etc.). Rooms are not super-luxurious, but definitely adequate and sizeable. In Italian tradition there are too many 'dust collectors' scattered all over the hotel. Dinners were good, breakfasts simple, but tasty. The lobby/lounge is welcoming and warm. And the hut where ski gear can be stored is great. We did miss having a spa, jacuzzi or even sauna for after skiing.
The town is quaint, with decent food. They're not very into apre ski in Abetone, but the little bar/cafe at the bottom serves after ski treats: beers, Bombadinos, etc. and gets full and buzz'y in season!
The ski slopes also good, well maintained with adequate facilities, etc. though on a smaller scale than the mega resorts. We also had great ski conditions while there, which helps a lot!
Be warned, the road in from the Modena side is longer than it looks, very wind'y and can be tricky in poor weather.
Overall, a very good stay, very good hotel and a beautiful little ski village.