The restaurant at the airport Marriott leaves a lot to be desired, and there's nothing worthwhile near the airport. It's only 15-20 minutes from the airport to Center City (downtown) Philly by taxi, so why not take the time to go to a great brunch in the city? My personal favorite for Sunday brunch is at Farmacia at 15 S. 3rd Street (just south of Market Street) in the Olde City neighborhood of Philly. Be sure to make a reservation or you won't be able to get a table.