At the Westin Villas, self-parking is avail for no fee on site. Each villa has wireless access for no fee. There are no resort fees. It's a beautiful resort on a great snorkeling beach.

However, if I were traveling with just my husband for just 3 nights, I'd opt for the Sheraton Black Rock. It has an even better location within walking distance of many restaurants, daily maid service, and as a platinum you have a great chance of an upgraded room, plus late check-out so you can lounge around til 3pm or so. Westin Villas are more geared for families, IMO, and your platinum status isn't recognized there. And even though I usually book villas so that I can eat some meals in, it wouldn't even be worth it for me to go grocery shopping for 3 days.

So there's my vote. I'm sure you'll have a wonderful trip no matter where you decide. Maui is my favorite place on earth.