The Park Hyatt at the Bellevue has not always been a Park Hyatt...as a result, the rooms all have a different charm and different shape. The gorgeous wallpaper in the hallways looks straight out of a Colonial Williamsburg house and the food (whether in the cafe of at the very nice NINETEEN restaurant) is a real treat.
You may feel like you are in a maze as you try to reach the lobby - just go into the upscale Bellevue mall (it is not really a mall, but it is close), and a left toward the parking lot entrance and take the elevator to the 19th floor. Voila...you have reached your check-in point and the cafe.
The one negative to the hotel is that the elevators stink - they are slow and seem to constantly be under repair.
Pluses include fabulous bath products, comfortable (pillowtop?) beds with tons of pillows, and plush robes.
Price is reasonable for the neighborhood of Philly you are in and the level of service you receive.