This renovated house is perfect for two couples with kids (who get along). Two bedrooms with king size beds and two other bedrooms: one with two single beds, and the other with a single and an oversized bunk bed. The bedrooms are on the middle floor with two full baths, while the open living space (kitchen/dining/family area) is on the third level with another full bath. The garage, on the lower level, contains 4-5 bikes, kayak paddles/PFD's, and two golf carts - one 4-seater and one 6-seater. You'll need these to get around the island, since no vehicles are allowed (other than service and emergency equipment).
I personally appreciated this, since it makes all the lanes around the island more bike- and runner-friendly, and lends a much slower-paced lifestyle to Bald Head Island. That being said, you can get anywhere on the island within a matter of minutes at 18 mph on a golf cart. The beaches are broad and flat, with a very gradual slope into the surf. They are uncrowded (but also unguarded) and accessed at multiple points from west to east via boardwalks over the dunes, in order to prevent damage to the fragile seagrass. If you want a swimming pool, that's available at the Bald Head Island Club, for which a temporary guest membership is available through the owners' link. The BHI Club also has an 18-hole golf course (links style), visible behind the house from the wraparound deck.
Back at Keewatin House, there's a washer and dryer on the middle level for washing out beach towels (provided by the owners), swimsuits and other beachwear.
Much of the island is held in conservancy and exists in wetlands or coastal forest. It is NOT commercialized, and dining options are limited, which means that you'll likely be eating in as often as not. There IS a small, but full-service supermarket in the island center, but prices are higher than on the mainland due to increased transportation costs (all freight, including your luggage, comes across by ferry and then gets delivered to your location by tram). Organized vacationers, therefore, will want to bring non-perishables across in plastic bins, or you can order your groceries from the Maritime Market in advance and they'll stock your fridge prior to your arrival.
The bottom line: Keewatin House is comfortable, well-equipped, well-suited to two active families. While not overly spacious (if all nine beds are occupied), there's plenty of room for what will be a vacation largely spent outdoors.