The great work slots are nice. Can be helpful for musicians/artists before you have the other slots to put them. The main feature of the wonder is interesting, but in my view, rather unhelpful. I think the +2 is just not helpful enough, especially since I don't really build that many wonders. On lower difficulties when you are going for a builder empire it could be fun. But on higher difficulties, there are better things to do with your production. And the important tile next to your capital. Giving up that tile could be really important, especially early game when the wonder is built. You may not be able to get a farm triangle, or a good district spot, or lose your stone/cattle/etc.
All that being said, it's not that expensive a wonder, and my small sample size seems to indicate it is pretty easy to achieve, even on deity.