I got my PADI certification there, although I'd scuba dived in Hawaii without certification in the late 60s. The waters of SE Cuba, and I assume all around the island, were clear, beautiful and heavily populated with fish. I got my deep dive certification, diving to 160 ft off of "the wall" east of the entry to the bay.
Jamaica is different, still beautiful but having been fished out by the locals using fish traps decades ago.
With all that is very bad about Cuba with respect to civil rights, political prisoners and assorted human rights outrages, etc., I have always hoped to travel there one day.
I have an old friend who runs a tugboat company on the east coast who has visited many times over the years and has showed me pics of he in Havana as far back of the 80s.
We can't take our Rockets Phil but that bike rental place looks intriguing. As I get closer to my end than to my beginning, I become less dogmatic about countries I will to visit. I know much more about Doug's trial and imprisonment, a horrific affair, then I mentioned above. Also about his physical condition when finally released.
Still, touring Cuba is up near #1 on my bucket list. And BTW, that is an excellent travel reference for the adventuresome. The travel warnings were for those who are used to good to excellent travel accommodations and those who recoil in horror that toilet paper and potable water are not readily available. Still, when visiting a totalitarian country, one must always be mindful that the rule of law and due process does not apply, especially when relations with one's country are unfriendly.