Expected more from a Four Seasons Property
My stay at the Philadelphia Four Seasons was fine -- no more or less. Although there were a few small annoyances, nothing was terrible but I was definitely underwhelmed. I have stayed at this hotel previously, but it won't be my first choice next time I am in Philadelphia. The staff is friendly and helpful, but the hotel needs updating.
The first room they gave me smelled of smoke so I asked to be moved, which they did immediately and without any fuss.
The room I ended up in was spacious, but felt a little dated, especially the bathroom with its older tub and shower curtain. Personally, I prefer a glass stall shower with a rain shower. 
The two small annoyances were the TV and the safe. The TV is a big flat screen with lots of channels, but the remote seemed slow to react so I'd hit a button and it would seem like nothing was happening so I'd hit it again and then either change the channel inadvertently or turn the TV off just when it was actually starting to turn on.
The other thing that bugged me was the safe. It is an ancient safe that is tiny and barely fits anything. There is no chance of getting a laptop in there and the worst part is that it uses an actual key! When I left to go running, I had to bring the key on its metal chain with me each time. Again a small thing, but at an upscale hotel you expect attention to the small details like a modern, digital safe spacious enough for a laptop.
The best part of the room was the bed. It was amazingly comfortable. 
The location is good but you need to temper your expectations a bit and get a good rate; otherwise, there are better choices in Philadelphia.