We didn't stay there but up the street with Hilton. I can't comment on the units but the resort has a great location for the area IMHO. Rocky beach in front of the resort but a short walk to a nice sand beach referred to as A-bay. Good shopping, decent restaurants and an ABC store that's called Island Gourmet instead of ABC. If we go back to the Big Island we'd prefer this resorts location to any of Hilton's timeshare offerings in the area.
I just wonder how the size of the units compares to the Hilton timeshares? I still prefer the Bay Club, among the Hilton timeshares, due to the unit, and lanai, size. I don't know how a re-done hotel room would compare.
I'm back and answering my own question. I did some searching and found the square footage for the Marriott units. The one bedroom is 800 square feet, with 100 square feet of outside space. The two bedroom is 1200 square feet with 150 square feet of outside space.
Bay Club one bedroom units are 878 square feet and two bedrooms can range from 1118 to 1484. Kingsland one bedroom are 561 and two bedroom are 875. I couldn't find Kohala Suites, but they should be somewhere between Bay Club and Kingsland in size.