In terms of the local area of the ski station and the town of Sapereva Banya that it feeds off, the most notable tourist attraction apart from the ski hill is the thermal mineral water that the two is built on.
This is the hottest in Bulgaria and has many medical properties as well as being a damn good soak after you get off the mountain!
You are also right on the door step to the Seven Rila Lakes as well as the UNESCO Rila Monastery so you have a fair bit to distract you if you don't fancy a trip to Borovets or even Sofia less than an hour away.
Nightlife is rather relaxed but there are one or two trendy bars in town that the local "cool kids" frequent but night clubs can only be found in Dupnitsa and Samokov or back in the capital, Sofia.