if you can't get near the HH area, i wouldn't worry about it. all the park buses stop there before heading out of the resort, so it's easy to use them as a shuttle to get to the main pool.
The HH category buildings are 11-14 and 23-26. 15,16,17,18,27,28,29,62,63,64 are also close and just a short walk to to the Main pool, Olivia's and the Conch Flats Store. 62-64 all have elevators.
Last week we went and stayed in building 28. Very convenient to the main pool and a bus stop. I have a bad back, don't do well with walking, so when I say it was convenient, it was! Also, buildings 15, 16, and 17 are fairly convenient to the main area.