Ihave stayed there a couple of times and we are going back this June.
DIsney's Hilton Head Island resort is located in Shelter Cove... not on the beach, but inland. They do have a beach house with pool, casual dining, childrens water area, and bar. It is a short drive from the main resort, or you could bike it. DInsey offers shuttle service too.
The resort is very laid back. Similar to the Poly... winding paths, lovely trees... The resort was built AROUND the trees... some quite wonderful. The main pool is nice, fun slide, small kiddie pool, hot tub. Hammoncks and BBQ's round out the resort....
There are kids activities out the wazoo at the community center... marsh walks, kids night out, lots of stuff for all ages. Kayaking, dolpin cruises all right there....
Some resturaunts within walking distance....
You can find out a lot more about HHI resort by heading over to the Disney Vacation Club Fourm here on the DIS
