Rainbow house was a great option for our group of 4 adults and one child. Really comfortable spaces to relax, both inside and out. Miguel was super quick to respond to any communication and have great local tips. Plenty of beach supplies, some games and lots of kids books (in both English and Spanish). Easy walk to beach and shops. We loved our stay.
One word of warning about Kauai/hanalei bay - this is a place of early mornings. Roosters kicked off before 4am most mornings and bedroom curtains are very sheer. Bring ear plugs if you're a light sleeper, that did the trick for us!