I'm going to be staying at the Melia on Coco Beach in Rio Grande in January for 4 days. I am a snorkeling fanatic. I plan on bringing my gear. How is the snorkeling right off the beach of my hotel? Are there any other places where I can hop in a cab and go to for snorkeling that wouldn't be too far for me? (Maybe a 5-10 minute cab ride or something?) I'm going with my 83 year old mom, so I'll be in the water alone. I don't want to go to a "dangerous" area where our safety is compromised. But, I want to be able to enter the water and see something decent. Thanks so much in advance!