Hilton Garden Inn on Arch st. right on the edge of chinatown.
That's a great area. You are right around the corner from Market street. I would walk down Market Street to 2nd then make a right and walk around what is called the "olde city" area. Also you are super close to the Chinese place I was telling you about House of Chen.
Hmmmm at night and no alcohol. The Phillies are home Monday-Thursday this week. If you have never been to citizens bank ball park I highly suggest going. Its a beautiful stadium. During the day if your bored go to the Franklin Institute and the Academy of Natural Sciences. Both of those places have some very interesting things.
How long are you in Philly for?