My 5 year old son loves going here. Plenty of activities to keep him busy and there are some loungers and tables for parents to sit at and sip on coffee while the kids play.
If you go, plan on staying for a couple hours to get your money's worth. It's not super expensive but it's enough that you want to let the kids play around quite a bit before you leave.
Also, I did have my son's 4th birthday here and I must say they did an excellent job with the party. The whole package was reasonably priced (including the pizza and veggie tray I added on) and it came with some extras like a cafe o'play shirt for my son signed by everyone that came to the party. The girl that was helping with the party was more than helpful and she went above and beyond to help with everything.