POFQ is so pleasantly compact that it truly doesn't matter.
Like you, I was very concerned about picking the right building. I ended up requesting "near food court and bus," figuring the more general I make it, the better chance I have of getting what I want.
Well, he checked in around 11:00 p.m., and I didn't get what I wanted. As the CM circled my room location on the map, I was very disappointed. I got a room at the very far end of Building 2 (towards the river and Building 1). I didn't ask for a different room, figuring I could always try to change the next day if it was that bad.
So here were my wife and I nd our 6 year old and 4 year old, and I'm expecting this long walk to our room in just about the middle of the night (by kindergartener standards). I was very pleasantly surprised that we got to our room in exactly 2 minutes.
Late at night, after a day of travel, with two little ones in tow, our "far away" room was a 2 MINUTE WALK from the front desk, meaning that it was also a 2 minute walk from the food court.
I decided that my room looked far away when I looked at the map, but it was ridiculously close when I looked at it in real life. I mean, how do you complain about a 2 minute walk?!
Later, I timed the walk from the very far end of Building 1 to the food court -- 3 minutes 20 seconds.
So as you can see, POFQ is so pleasantly compact that exact room location doesn't matter, at least in my opinion.