I'm in the PHL Airport Marriott 5-6 nights a month. They remodeled winter 2003, so all the rooms are pretty new with down comforters and comfy beds.

The concierge lounge is pretty well stocked for breakfast and happy hour snacks.

This hotel has the best hotel gym ever. Really big with lots of equipment and a good lap pool.

I take the train downtown when I need to go there. Really easy.

With the remodel, I think the Airport Marriott is nicer than the one downtown.

Edited to add that I've always been upgraded to a bigger room with a sittig area and access to the concierge level at the PHL Airport Marriott even as a lowly silver.