No need to really contact host, but no problems with stay or booking so communication was good. Property and resort staff are stellar and amenities are definitely worth the price! I stayed in an ocean view studio w/ my 2 small kids and husband and didn’t mind the small space, especially since we were there for the amenities mostly, anyhow. The property has a lot of fun, free activities for kids like hula classes, lei making and movie on the lawn. As a mom of messy kids, I appreciated the free laundry on the floor I was on as well. We ate at both on-property restaurants and at the marketplace; they were decent, but can get pricey if you eat all your meals there- so I’d stock up on your own food if you can. Lots of people made use of the BBQ areas and were good about sharing the grills and provided utensils. Pool and beach chairs fill up really fast, but people rotate out during the day, so we didn’t have any issues with getting at least 2 chairs to put our stuff on daily. I would definitely recommend using Hanna’s property listening for the Mariott Ko’Olina as she was a great host. We enjoyed our stay and will be back!