Ages ago -- before any of us were married -- my now-husband and I, and my BFF and her now-husband, spent a week at Crystal Waters Villas in Negril.
It was one of the best vacations EVER. Absolutely fantastic, completely chilled-out.
The place is really quiet -- without being pedantic. People just kind of mutually understand that we're all there to relax, and that if we wanted crazy-loud music and shit, we'd have gone to Sandals or ClubMed. If there were kids and families there, I never noticed them; and it was a good place for using as a base while going out and about to see the sights -- as opposed to one of those all-inclusive places where you get there and then you never leave the grounds.
Each villa came with a local housekeeper, who'd arrive in the morning to cook breakfast and clean up -- and also cook dinner, so when you arrived there was real home-cooked Jamaican food. You either go shopping with her the day you arrive, or give her $$ -- like $100 did it for us -- and she does it all. Absolutely phenomenal food.
You can check them out on TripAdvisor or here;
http://www.crystalwaters.net/descrip.htm