"Near Hospitality House" reservations will be in buildings 11-14 and 23-26. All of the OKW villas are similar regardless of the building in which they are located. Buildings 11-29 have only one entrance to the master bathroom (through the master BR) in 1 and 2BR villas. Buildings 30 - 64 all have a second entrance through the laundry room. Only Buildings 62-64 have elevators.
As already noted , the only difference is that the HH buildings are near the Hospitality House (even though there are other buildings just as close). Buildings 62-64, 15, 16, 17 and 18 are as close as most the HH category buildings - but those are only requests, the HH category is a guaranteed reservation category.