Nice place to spend a weekend
Positives:
-The hotel is located in a clean, safe location
-There is a parking garage adjacent to the property. You can self park or use valet and it is only 30.00 /night if you are a guest of the hotel
-The river views are INCREDIBLE!!!!!
-The hotel is located in walking distance to the old city which has great night life and there are plenty of cabs (easily accessible) to take you to other locations in the city.
- The rooms seemed to be newly decorated, clean and spacious with comfortable beds and a modern bathroom (and more incredible views of the river).
- The indoor pool is clean and warm. They have a state of the art gym area. The sun decks are small but have comfortable lounge chairs and those great river views.
- We ordered sandwiches for lunch one day and breakfast the next day. The food was delicious, and service was prompt.
Negatives:
-The lobby seemed very outdated and frumpy for a metropolitan Hilton. It was clean but the furniture seemed dated and the art is weird. It doesn't go with the modern decor of the rest of the property. My friend even walked in and then walked out to check to make sure she was in the correct hotel. This isn't a huge deal but it is worth mentioning.
-There was 1 lamp in between both beds but no individual reading lamps on each bed
-They did not give shower gel or q-tips. They give shampoo, conditioner, soap and good toothpaste.
-There were minimal towels in the bathroom so if there are more than two people ask for extras.
-The staff was pleasant but did not go out of their way as I have seen in other hotels. 
-We asked for a late check out so we could sleep in. Then a housekeeper knocked on our door at 9:30 (which is way before even normal check out time) to ask when she could clean our room. We found this to be odd and we would have been irate had we still been asleep.
-We ordered two bagels for room service breakfast and we only received plates and utensils for one person. We received two coffee cups but only 1 plate/fork/knife which is odd.
-The food prices are high to begin with but then they tack on all kinds of tax and gratuity which makes the room service prices astronomical! 
-There is no service phone in the pool area so we had to use our cell phone to call for poolside lunch.
Summary:
Based on the amenities and location I wouldn't object to staying here again however the property is a bit pricey and I would most likely try to find better deals if I were to return to Philadelphia. The river views are incredible but I would rather save money than have a great view. 
You will not regret staying here as it is clean, safe and comfortable