If you like art I think this is a great place to go.
If you are not really in to art, but you want to do something different than nature and don't want to pay a dollar: this is your spot. We went there for 30 minutes and that was quite fine.
For the moms who breastfeed and don't want to feed in public: they have a great private area. Clean, spacious and with relaxing chairs. And you can lock the door if you want to.