There are 21 1BRs. All are lock-offs, meaning they are connected to a Studio.
16 of these are in the Live Oak Lodge - Buildings 11/12. Some are HCA. The other 1BRs and Studios are located beneath one the 5 GVs at the resort found in buildings 16,18,19, 28 and 30. None of these have a pool view but are closer to the pool than buildings 11/12. The resort is pretty compact so nothing is far from anything else - less than a 5 minute walk from end-to-end.
Unless a HCA 2BR is needed, the lock-offs are usually reserved only as separate 1BRs and Studios. There are no other HCA villas at the resort. None of the GVs are HCA.
Buildings 11/12 are connected. The parking garage is under the combined buildings. Technically, the elevator is physically located in building 11, but from a practical standpoint it serves both buildings - they are relatively small buildings. Building 11 is also home to the Front Desk and Big Murgies Den (with TV, pool table and small living room type area).
Here is some
HHI Resort information.
Here is a
map of Disney's Hilton Head Island Resort.