Awesome place and host. I'd recommend his place to my friends or anybody I know :)
The place was better than I expected. Great view and perfect condition. It's not my first time in Waikiki, Hawaii so I can tell you it's not easy to find the place like Mitch's. Also he's great in communication and very detailed in a good way.
I stayed there with my wife so the room was spacious enough but I think the family with two kids won't be a problem. The parking's a big plus if you rent a car, it's hard to find a parking place in Waikiki... We always rent a car in Hawaii, however If you don't wanna rent and just stay in Waikiki, it doesn't matter 'cause there's a lot of stores and restaurant within 5~10 minutes walk.
The room was clean and had almost everything you need. Fully equipped kitchen and something else like umbrella, boogie boards, beach chair.
So...if you ask me I'll definitely stay at Mitch's again :) Two thumbs up.