Location Is The Best Aspect
If this hotel wasn't across the street from the Convention Center, I would not have booked it to spend one night going to the Philadelphia Flower Show and have dinner with friends. We stayed here once before a few years ago and it was fine. This time it was a little less than fine.
As others have mentioned, parking is a bit of a project. You park in a commercial parking lot next door to the hotel, and for events like the flower show, it can be packed. My biggest issue with the lot is that it's quite confusing. For example, we noted our section of the lot and what floor our car was on, but when we went to retrieve our car and got off on the correct floor, we were in the red section instead of the blue section, but couldn't figure out how to get to the blue section! We walked around and ended up walking to a different elevator to find it.
The hotel itself is a bit dated in decor and in the condition of some of the furnishings, but it's comfortable enough. The staff is always friendly, the room comes with a mini-fridge, and the location is perfect for Convention Center stuff. We didn't have very much time for this trip, so we basically dropped our bags off in the room and headed out for the night. Upon returning we discovered that a bedside lamp wouldn't turn on for 10 minutes, the duvet cover had black lint on it, and, most importantly, once we crawled into bed the strong, sickening odor of cigarette smoke wafted in. This is a non-smoking hotel. We called the front desk and they said that even though it's non-smoking "people do what they want to do," but said they'd send security to roam the halls and try and discover the source of the smoke. I mentioned that this is quite a problem as my husband has asthma. In the meantime they suggested we close our bathroom door. I have to say, it has been a very long time since cigarette smoke was an issue in a hotel room.
The next morning we found an apology note with some breakfast coupons and a promise of awarding us a small amount of Hilton Hhonors points (1000, I believe). The gesture was appreciated, but we didn't feel great. Upon checkout we mentioned the lamp and the duvet and also the cigarette smoke, and one of the attendants who was nearby took it upon herself to credit our bill by $50 -- we really were happy that she was listening as the young man who was checking us out was just noting our complaints but didn't offer anything. I have to note here that although we were given some points and a bit off our bill, we've had hotels (including Hilton family hotels) offer more in compensation for lesser problems, but we did not ask for more.
Once home we got an email from the manager, asking about our experience. I basically wrote him a version of this review, and he thanked me and said the comments would be discussed with his staff and he was glad we were compensated. 
This hotel is next door to Reading Terminal Market, across from the convention center, and walkable to many Center City restaurants, so its location is its best feature. However, I think next time we'll go with a better hotel that isn't as conveniently located.