If you are staying in a 1 bedroom, I assume you are planning on your mom having the king bed and you are taking the pull out sofa. I would either request an elevator building (make sure you tell them it is for her medical reasons) or I'd ask to be near a bus stop in any building above #30. That will NOT be the HH area, but being near a bus stop will get you to HH quickly with any bus, since they all stop at HH last. If you are in the HH area buildings that are in the HH booking catagory, none of the rooms will have the extra door to the bathroom, and you will be stuck going through the master to get to the bathroom from the living room.