I would agree about the PC near 120-139 in EWR as being one of the best in the system, although I recently used the one at terminal A in EWR and found it not that bad. They have expanded it into 2 separate rooms--one with the bar, counters etc and the other as you enter, with armchairs and coffee tables. As for transport to the Philadelaphia area, AMTRAK & ACELA stop at the EWR airport station and make it a quick ride into PA. You can then rent a car in the area or take a local train to your destination.