Finding ethical low-impact accommodations for large family

We are planning a Hawaii vacation for our family of 6 next summer. As our children are now too big to fit into one hotel room, rather than book 2 rooms we now usually stay in Airbnbs when we travel, and save money on meals as well as on the lodging. I’m aware of the impact that Airbnb and other private short term rentals have had on local housing prices and availability, and I don’t want to contribute to the problem. I would like to stay somewhere locally owned, and not part of the general local housing pool. However, while browsing accommodations (Expedia, Travelocity, etc), I’m finding it very difficult to determine which condo-style accommodations would fit this. How to know if a property is locally owned? And how to know if a property near the beach with a pool is more of a dedicated tourist resort type of complex, versus an apartment complex that a regular resident might try to rent for their family to live in? Are there listings somewhere of “good” properties? We are planning to visit Big Island and Kauai. Thank you!