Less than first class
The visit started well. The doorman was affable, the valet was polite, and the desk staff helpful. The bellhop who brought up our bags even offered to fill up the ice bucket.
It was downhill from there. I pulled back the curtain and found that paint on the window sill was peeling. The furniture was “tired” as another reviewer said. It looked as if it had come from a scratch and dent sale.
The second day, the maid forgot to replenish the coffee. I called the desk and some was brought quickly and the desk double-checked to see whether it had been done.
Returning to the hotel on the second evening, it was apparent that the carpet had not been vacuumed (crumbs under the coffee table). One of the hand towels was ragged on the edges (haven’t seen anything like that in a hotel for years). The arm chairs and the coffee table were dusty. The coffee table top was frosted glass held above a metal frame by small metal cylinders (two of which were missing). The frosting on the glass had been damaged in several places so the table top looked dirty all the time. 
The lobby is large but much of it is partitioned off for a bar and restaurant. The seating for hotel guests or people waiting to meet guests has been reduced to exactly three arm chairs. Not nearly enough to accommodate the people milling around.
The hotel is not up to the standard of the Sofitel in NewYork City. I would try a different hotel when returning to Philadelphia.