Just had a recent stay here at the end of June. I had originally booked the Westin, but just a month or so before my stay, I noticed that the Le Meridien was $45 cheaper, so I switched my reservation.
I agree with the positive comments about this hotel - it's very nice and the location is excellent. I took the train from PHL to Suburban Station, and it was only about a 5-10 minute walk to the hotel. I also walked to the subway station to get to the tourist sites (e.g. Independence Hall), so it was very convenient.
I only stayed one night on a layover. As a gold member, they upgraded me to a superior suite and gave me late check out of 4:00 p.m. for the next day.
I did find it a bit weird to walk through the bar area before getting to the registration desk. I arrived late in the evening, sweaty and tired, to walk into the bar area with a full party in progress with everyone in formal attire.