Agree with newmans.

 

We've stayed at Paris once in a Red Room, I think it had a P next to the number - extra space or something? The room was pretty good, and we love the location and restaurants. Mon Ami Gabi for brunch is one of our faves. Not a fan of gambling there, but it's a quick walk to neighbouring properties.

 

The "P" room I've stayed in at Paris was at the very end of the hall. It's larger than a standard room. The view from my room was strip and arc de triomphe. I believe there are P rooms at the end of every hall.