Before I moved to Hawaii, I was able to take a short "scouting" trip to sort out where I wanted to live and learn about the island of Oahu. I stayed with some generous friends on Kaneohe Bay on the windward side of the island who had a lovely view of the water. Boats bob, anchored in the semi-protected bay while paddle boarders occasionally float by.
With the exception of rain (which does happen more often on the Windward side of Oahu), the view from this lanai was extraordinary.
If you are looking for a quieter, yet tropical and beautiful place to stay on Oahu, consider renting a condo or house on Kaneohe Bay Drive.