We had a great experience staying at Colin and Amanda's place. Everything is just like described and we didn't have any problems or issues during our stay with ~2 years old little one. The sandy beach is really 3 mins away and it's the most beautiful beach we've seen on Maui so far. Even in August, when it's windy on Maui you won't feel it on that beach. Beach rentals right on the way to the beach is very convenient, no need to go everywhere. Also, there is a beach walk road you can take for walking or running.
The room was clean and had everything we needed (and even extra). AC worked great all days without any issues. The hotel area also great, we used main pool every day, since it has a section for toddlers.
We didn't communicate to host during our stay since it was not necessary - everything was great. Mahalo, Colin and Amanda!