Vicky, if you search the forums (not just the reviews section) you'll find many threads about HDM in Cabo. The text below is quoted from a reply I made to a post in August:
"I've stayed at Hacienda Del Mar, and my brother owns there. It's an excellent choice for older visitors who want to enjoy some quiet luxury without all the pounding nightlife noise closer to town. It felt like pretty "traditional Mexican" decor to me, and the garden-like grounds are beautiful. Five swimming pools, good restaurants, health spa, and great accommodations are on-site. Most buildings are only three stories high, so stairclimbing would be minimal, if they were placed on a lower floor. And since your folks will have a car, getting into town for shopping, restaurants, or other activities wouldn't be a problem. Bonus: There is excellent golf right next door at a Jack Nicklaus course, too.
Check the photo gallery on their website:
http://www.haciendadelmar.com.mx
"
The resort is really nice, if you want nice-but-not-too-fancy accommodations. If you want over-the-top, there are better places to stay. But I had no complaints at all for the week I stayed there, and my brother and sister-in-law love their unit there. If you'll have smaller children, they may not find a lot to do there. Older children and adults will have a fine time.
Note that the beach is not swimmable. But with five swimming pools and a rotating progressive Happy Hour schedule at each pool, who needs the ocean? LOL!
Hope this helps,
Dave