We are interested in availability for week of 2/14 to 2/21. We are each 60 plus. Tal is interested in scuba and Sarah in reading and snorkeling and hanging out. Will be traveling from home north of San Francisco. Willing to swap our home with owner if above dates mutually available. How far (minutes walk or bike or drive) to nearest (or recomended) dive guide group? Is a car necessary ? cost fo a couple for a week? Proximity to restaurants? Or local store for breakfast/lunch food? Although we plan on coming alone, what is the cost of only one couple? two adult couples (no children)?