When I was there in February this year, I stayed in loop 2800. I don't know if any more are located in the back of the loop, but 2801 and 2802, the first two cabins in the loop, were both handicap accessible with the ramps installed.
I don't know room numbers, but the 2500 loop appeared to have 5-6 cabins with ramps installed throughout the loop - oddly, NOT the ones closest to the bus stop.