Well, if you've never been to Philly before, you should of course see the historical sights (Liberty Bell, Independence Hall, the new Constitution Center, etc.). There is also the Philadelphia Museum of Art, which has nice art pieces, if that's your thing. There's also a TON of shopping, not like NYC of course! As for night life, the hotel is nowhere near the downtown area, but you can get a cab. Definitely hit South Street...have a cheesesteak at Pat's or Geno's, enjoy the bars and shops, even get a tattoo if you like
If you want to dance, there is a club called Shampoo, which is gay night on Friday, but lots of fun, a place called Posh has disco night, Glam in Old City has house and funk sort of music, and there's pleny of regular bars if you just want to hang and have a drink. I'd recommend Fergie's, Monk's, Fado or 2021.
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