LSPTpr, I live in PA west of Philly, my wife Patti works in Philly goes there everyday. Philly is a city of the first class... not to be confused with a first class city, big difference ! Philly like most other cities in USA has it's ups n downs. I would suggest you stay west of the city as in West Chester KOA or better. You will have to drive so have a usable car or truck to do so or rent one. If you can figure out the rail system let me know, cause I can't... Also, figure all your trips for daylight only... ya don't want to be in Philly after night-fall. You probably will be staying in the West Chester area, consider a day trip to Lancaster PA ( Amish Country) it's half dozen to one 7 to other, both equal in time and travel. In Philly ya need to visit the Reading Terminal, The Franklin Institude and the other various landmarks such as Independance Hall etc. Remember, daylight only trips and you'll be safe. Welcome to PA and please come back
Ya need any help. hit me back PM. Tom