Do not buy the Groupon! It's not a deal at all. Read all the fine print before buying!
I bought a Groupon deal for pottery painting and was charged a studio fee of $10 per person on top of the money we already paid. Costs in total were the same as if I had paid regular price. The owner argued that this was because Groupon took all the money they were supposed to make. I felt totally ripped off. Regular prices are too high.
That aside the pottery painting was fun and if I didn't feel so cheated I'd consider going back. I think that the one start review that suggests the place lacks a heart are fairly accurate.