We really enjoyed our stay in Poipu resort area house.
It happily and comfortably housed us as three couples with two little kids. It is close to the pool (few min walk) and beach (few min walk). There is no gym access so if you are needing some exercise (like I always do), prepare for that as it does rain torrentially at times and you may be indoors and not feeling like swimming laps. I enjoyed going for runs in cooler hours and did HIIT workouts on the front Lanai (deck) which was always breezy/cool.
WIFI was great.
We liked NOT having air conditioning and liked the ceiling fans and room fans (absolutely necessary).
We self catered and cooked a tonne, enjoying all the fresh ahi tuna we could get our hands on (Koloa fish market = amazing) and frequented the various outdoor markets (my fave was the Saturday market by Kauai Community College -- the farmers had incredible fresh fruit and veggies including things you cannot find at any store (Soursop fruit, local cauliflower that looks like nothing in the grocery stores, fresh young coconut, white pineapple, the best asian greens).
The house upper-deck and lower back patio downstairs, fully equipped kitchen and BBQ made eating at home easy to do!
Jeremy and Markus who manage the property were great about communicating promptly and always friendly. I have only positive things to say about that team!
The area is very safe, the house is clean, the setting is magic so what more could I say....
make sure to try: Acai Bowl from Anika's juice bar, Kombucha(s) and juices from Kauai Juice Company, Beach House for sunset drinks, hiking Na Pali coast on North Shore, Waimea canyon, local beaches for snorkeling (Poipu beach had monk seals basking and sea turtles in the protected bay)....I also loved sunrise on the upper deck or on the big rock on the Hyatt resort beach-front as well :)