I cannot say much with regards to Rutgers-Newark, other than you may be slightly surprised by the area. It's not as heinously awful as you would expect.
With regards to Temple, try and stay in Center City, Olde City, Rittenhouse and so forth. The Club Quarters is decent and that's right next to Liberty One. It might eb a little pricey though. There is also the Westin, but (once again) price may be some concern.
As for an evening in the city...you could go a number of ways. Bars - depens on where you are staying, but if in center city...you could go anywhere from Fado/Irish Pub (near Rittenhouse) to classier joints like the Continental (I believe this is on 17th street). I'm not sure what you're interested in...or where you're staying. so it's difficult to help you out.