Surfwatch is my favorite Marriott resort on Hilton Head Island. I have also stayed at Grande Ocean and Barony (both a few times, once oceanfront with a fabulous view at GO). Although I liked them both very much, I like the quiet atmosphere at Surfwatch. I also like that part of the island and beach very much (near Port Royal area). Like someone said, you kind of have the beach to yourself. You have the park on one side, and a
very small residential community right atound SW.
I love the 'boardwalk' to the ocean. Being from NJ, it gives it more of a "down the shore" feel to me. Also, they run golf carts back and forth and will take you anywhere on the property. Just wait at the ocean gate for one, or ask them to call for one at the bar, if it's open. I have also called to be picked up from the marketplace and taken to the ocean vista building. They are very accomadating if you don't feel like walking the distance. However, unless you have a lot of stuff to carry, it is a very nice walk. The carts ran a lot at Christmas and constantly in the summer.
I have never swum in the indoor pool but it is beautiful. Even at Christmas, we swam in the main outdoor pool. It was heated very nicely. (I like the water warm.) If you work out, the locker room at SW is 'to die for'. In addition, besides tennis courts, there are soccer fields and basketball courts at the park next door. SW has any equipment you might need - just ask at the front desk - no charge.
We stayed in the oceanside building (the one closest to the ocean vista building) last Christmas. We were on the 5th floor and had a great view overlooking the pool and looking out to sea. We had exchanged in and I had requested something high floor with a view of the water. I wasn't disappointed. I spent every morning on the balcony with my laptop and cup of tea, surfing the net and viewing the ocean. I also stayed there with my sister this past August. She had traded her 1 BR OP Silver week. We were put in the ocean vista building. (She had requested it.) We were on the 3rd floor and had a very nice view - could see the ocean very nicely over the marshes. We sat out on the balcony all week and I NEVER noticed a problem with the mosquitos (and I'm always the one to get bit up). I have pictures from our December stay (below) but did not take any 'view' pictures in August - my sister did.
We did rent bikes during the August week (from Surfwatch). It was $25 for the whole week and very convenient. I like to ride from there to Shelter Cove, park the bikes, wander the cove for awhile, and then ride back. Kids will love the bridge that goes under the highway right by the mall and harbour (to cross 278). We also like to bike around and through the park area or head to the Port Royal golf course parking lot and follow the joint cart/bike path through to the gated community. It is a lovely ride through that area. And there is always the beach. However, I must agree that biking is the best in Sea Pines.
If you have 'tweens', there is a miniature golf and arcade a VERY short bike ride away (could also walk it), right by Carrabas. My sister's 10 yo granddaughter would've lived there if we had let her.
The shower is THE BEST!! You will never want to get out!!
If you have any other questions, feel free to ask here or PM me. Enjoy your stay!!

Kathy