One place that will always stay in my mind is The Deco Stop in Santo, Vanuatu. Without a doubt the most dive sympathetic place I have stayed to date. And gorgeous.
The Only Place to Stay in Luganville - Review of Deco Stop Lodge, Luganville, Vanuatu - TripAdvisor
The lodge was run by people who may no longer be active divers, but understand divers, and cater to them
a) The food was great, good value, and changed constantly. Not the same old same old every night, so you always looked forward to each nights specials. This is important as not only were most peoply happy to stay most night, but many of the local dive celebs happy to come and get shouted a meal in order to talk diving all night. Very smart.
b) they were happy to make lunch packs for you that you could order and take out in the morning if you wanted to stay out all day.
c) Breakfast was aimed at just the right time to eat, clean up, and be ready to be picked up for the days dives. This just made each morning so easy.
d) Every local dive opp considered them friendly, and would happily come pick you up from the resort
e) there were very large equipment wash areas to clean your gear, and they had crates you could use to cart your gear back and forth. Plus plenty of clothes hangers to dry your stuff on each night
f) The pool area was just a great place to hang out post dives and inbetween diving - you could easily dive in the morning, return for lunch, and then go diving again in the afternoon
g) Because they target themselves for divers, there were no random parties turning up making noise all night
h) they understand diving
i) they had a number of essential diving bits and pieces for sale
j) Cheap. Oh so cheap, and friendly as
When we left the Deco Stop, we needed to catch a connecting boat to another island, and due to a mix-up we missed it. No worries, as soon as Ben heard he drove us to the dock, launched his boat, and took us there himself. He must have burnt through a bunch of fuel, but would take no other payment than a beer. Now that's service!
I honestly can't think of a more diver friendly experience. If you want an excuse, go and check them out for "research" but hopefully what i've said above might give you some ideas. If you're a diver though, you will probably provide what divers want without even thinking about it.