HHI is a great place to vacation, either with kids or alone. You'll love it! That being said, be prepared to waitlist in August as it is toward the end of the busy season on the island and at the resort. That busy season starts around spring break and goes through Labor Day weekend.
There are an equal number of 1BRs and studios at the resort, and all are located in the same buildings. 16 of the 21 are in the main building 11 (Live Oak Lodge where the checkin desk is located) and 12--they are co-located and share an elevator. The other 5 of each type of room are located in the Grand Villa buildings: 16, 18, 19, 28, and 30. Personally, I like the advantages of a 1BR as I enjoy having a full kitchen and a washer/dryer in the room itself. But, the studios are nice. The ones located in 11 and 12 have easy access to a washroom with two washers and two dryers--rarely are those in high demand. If you're in one of the other buildings, then you'll have to walk to wash anything, though the resort is small.
Since the resort is small, you'll have no issues getting around. The main pool, Mercantile, and Tide Me Over quick service are located toward the back third of the resort. . .all of a 6-7 minute walk from the front of the resort.

As for things to do, there are some right there on site:
- lots of yard games from horseshoes, to corn hole, to giant checkers, to bocce ball, to shuffleboard, and others
- rent bikes from the resort (can only reserve them after you arrive) and pretty much bike anywhere on the island as there is a huge collection of interconnecting, paved biking/walking paths. You can start from the resort!
- there are activities at the resort; some are free (campfire a couple of times a week with s'mores) and others have a nominal cost (tie dye t-shirts, for example)
- pool games at the main pool
- sitting on the balcony and just watching people, nature, and/or the water (if you get a water view)
Off the resort, there are hiking/walking nature trails nearby, as well as kayak/paddleboard/fishing/dolphin-watching-cruises that you can rent/reserve at Shelter Cover Marina. The resort itself has a standalone Beach House with a second pool, a QS, and access to the beach. The beach is gorgeous and can be accessed without getting into the Beach House. The resort has a shuttle that runs daily, roughly every 20 minutes or so from mid-morning to late afternoon. Or you can bike there or walk there or drive there.
Restaurants are too many to list and most are better than any Disney restaurants outside a handful of top tier ones at the World. Seafood? So many great ones to choose from. Italian? There are three excellent ones within a five-minute drive. Typical American fare? Everywhere.
Lots to do and see at HHI, both the resort and the island itself. Enjoy!
P.S. This is a laid back, low country vibe place to vacation. No rush to get tickets, no angst about not getting an ADR, few (if any) lines to stress about. This is the place to go simply to relax.