Woodman,
I've stayed at Suites Bahia many times (5 or 6) over the last 8 years, and I have always been very impressed with them. It is a very simple, but very comfortable hotel. I think it's great for divers, who don't have any non-divers with them - this is definitely not a resort (no pool or beach, no restaurant or room service, etc). They are right in the middle of town, so we always walk everywhere and save money by not having to take taxis. My husband and I usually get an ocean view room, because I do like the pretty view of the water. And the balconies are great for drying out all the dive gear (as much as it dries in Cozumel) each night. The beds are pretty hard, like most in Cozumel, but the rooms are clean and the tv's get english and spanish cable channels. The internet in the lobby is on an old desktop computer, so it's slow, but workable. The staff are very nice and have always been able to answer questions and help with reservations for stuff. Overall, you really can't beat the price, location and comfort level, as a diver. Have a great trip!