We stayed at Wailea Ecolu place for 10 days in June with our 2 kids. We had enough space there for the family of four. It looks exactly like they advertise it in pictures.
The beach was close, but with all the chairs, towels, and snorkeling gear (available at the place!) it was hard to walk to, so we preferred to drive to it and it was taking about 5 min.
The kitchen was equipped with everything to cook pretty elaborate dinners and our kids being picky eaters were happy there and we could skip expensive restaurants quite a few times.
Ekolu complex is really quiet, but close to all the Wailea attractions.
The only thing that could be improved is AC that was most likely retrofitted there at some time, looks like one in-window unit and was a bit noisy.
However, we would still recommend it to anyone and can't wait to come back there ourselves. We will sure miss that ocean view!