That's what I ended up with a couple years ago when looking for a place to spend a week and dive on a budget. Loved it and can't wait to go back in Feb 2018...
My problem is though that I got spoiled by diving in Indonesia and prefer to stay away from quick weekend and weekly trips to Coz, save some money and fly over for a month and dive, dive, dive, in Bali mostly
Such a biodiversity, it just cannot compare to the Caribbean... And nice variety of different type of diving: shore, boat, muck, drift, small critters, big pelagics... I mean, simply amazing, and that's just Bali, not even talking about Raja Ampat or Komodo and Flores... Sorry for my OT ramble