I booked with these guys because they offered both diving (for myself) and snorkeling (for my girlfriend) for the same trip. We weren't told until we got there that because it was off season, they didn't have the boat that you see on the website ready to go so we had to make due with an inflatable, which wasn't terrible. We then drove out to an island and they just dropped off my girlfriend without giving her any information about what to do, where to go, what not to do (apparently they have "death apple trees" or manchineels on the island that you shouldn't get anywhere near...would have been a nice heads up). She mentioned that there were also signs that said there was a risk of staph infection. Neither of those were mentioned before she had gotten there so would've been nice for a little prep/warning. Also, 35 Euros to be driven to an island and dropped off is a bit steep.
The dive itself was pretty good. We got to see a bunch of pretty big lobsters and tons of fish. The visibility wasn't that great, but overall pretty fun. I would probably dive with these guys again but would advise against the snorkeling.