Although a home party is nice, if you want to have a party at a place try the Smith Memorial Playhouse. It's a playhouse that's built in Fairmount Park. They have 3 floors and tons of toys. the playhouse is run by volunteers so they rely completely on donations. Which is what your party fee would be. You have to bring your own cake, snacks and drinks. But it's cool. It's really only for kids 5 and under so this would be the last year you could use this spot, other than that it's Chuckie Cheese (yuk!).
Check out the website, it's worth a look. Good luck with your planning. I hope your daughter has a great birthday no matter where its held.