Yes, close to the lounge and elevators would be a good request.
We just stayed at PBR Club Level last week with our son who uses a wheelchair. Our room was in the Villa wing, 6th floor. We used the same bank of elevators to access the Club Lounge on the 3rd floor and the outdoor walking path on the first floor, which was good. Our room was down a very long hallway, though, and the carpet was thick. It made pushing the wheelchair a little harder. So a request of near the elevators would help if you don’t want deal with that.
There are steps going down into the club lounge at the main entrance, but you can use the alternate entrance with a nice ramp to the left of the main entrance. The lounge exit has a nice ramp leading up to the exit door. We didn‘t have any trouble getting around the lounge with a wheelchair.
FWIW, we had put in a request for a balcony and it was fulfilled. So they definitely do look at requests. Good luck and have a great trip!