Stayed here from Thursday to Friday this past week for business and am basing this review on the other similar hotel options in the area.
Quick thoughts:
-great free shuttle that will take you anywhere in Pittsburgh (no airport pickup which can't really expected)
-.4 Mb/s down free internet connection http://www.speedtest.net/result/714084446.png - sucks
-great concierge lounge - in a time when Marriott concierge lounge seems to be disappearing, this one is solid
-best Marriott gym I've seen in a while (basically an average Hilton gym)
-limited room types and variations
Rating is 3.5 rounded down based on the rate paid versus comparable hotel options in Pittsburgh.