I stayed with my 7 year old son at Thomas' in October 2015 for 6 nights and we were very happy that we chose this fabulous place! Everything is clean, the bed is good, it IS a safe area, absolutely quiet, and free parking (in Waikiki valet parking over night is 30$!).
My son was in the pool every day and we couldn't believe the luxury of having a whole house to ourselves (Thomas was travelling and the other rooms were only occupied for two nights). Communication with Thomas is good, he replies immediately. Kailua has everything a visitor of O'ahu can wish for AND Thoma s has EVERYTHING one needs for all possible activities! Kayak (racks to put them on your rental car), life wests, bodyboards, bikes, surfboard, beach umbrellas... Go google, the cheapest kayak or bike tour with kids all start around 100$ per person! Last but not least, we did some hikes in the area (pilbox hike-incredible views, Kuliouou) so you have a perfect base here, also Foodland is very close. But i would recommend a rental car. We had a great time!+++