The previous reviews are right on the mark. There are a few minor inconveniences and plenty of joys at Isla Marisol that I don't need to repeat. However, this is all assuming that nothing goes wrong. And by that, I don't mean no hot water-- I mean wrong.
Other reviewers are correct that the ride to the island is rough, and that the boat makes several stops along the way. I had read reviews before the trip and had been prepared, or so I thought. My husband and I are an adventurous, outdoorsy couple in our mid-thirties, are used to roughing it, and have been on boats hundreds of times (my husband is a sailor, and we dive, snorkel, and whale watch any chance we can get) in all sorts of weather and surf, so we took anti-motion sickness medication and didn't think much of it, until we were taken to the boat in which we were to cross the sea. It was a tiny fishing dinghy (you can reach your arms across it), weighed down heavily with food and water for several resorts. We were given life jackets to wear, and without any warning, were given the ride of our lives. Within 30 seconds of entering the open ocean, we were completely soaked-- I mean down to dripping underwear, water up our noses and in our eyes, ears, and mouth --by ocean water and waves coming over the sides of the dinghy. There was a 6-7 foot swell, and the boat would rise off the waves at such a height and such a steep angle that you would lose sight of the horizon, seeing only the sky, and then the boat would slam back down onto the waves -- HARD. Really hard. It wasn't your normal washboard experience, it was getting hurled into the air, hanging for a few seconds, and then getting slammed down. Over and over. For hours. IN A DINGHY. We've been in rough seas before, and have many times experienced the situation I described, but in large enough, seaworthy vessels made for crossing oceans. It also rained on us, but that hardly mattered as we were completely soaked already. What mattered was that we feared for our lives. I thought that I might actually die, that we might get thrown off the boat, or that the boat would crack in half or flip over. We both independently thought (we were not speaking, as we were so scared and bent on survival) about the return trip, and how much a helicopter ride might cost instead. I screamed to the captain that I was scared. He very casually told me not to be scared. He then proceeded to tell us about two people who had died the previous week in a boat right where we were because the ocean was too rough.
We finally arrived to the island, and were given no apology, only an explanation that the biggest boat, the vessel normally used for ferrying passengers to and from the mainland, needed to be used for a large group of divers, and that the next largest boat was out of commission. In other words, the resort prioritized getting a group of divers out on the water over our safe passage. The resort might claim that it was safe, but it absolutely did NOT feel even remotely safe to us. Even if the captain did get us to the island alive, there was no warning of "it's going to be rough, but you'll be ok". The other guests at the resort were absolutely shocked when they heard that we made the crossing in the dinghy, as the trip is bad enough in the large double-decker boat.
We met the owner of the resort a few days later, and not surprisingly, he had not been told about the situation. He apologized and offered us each a free dive in compensation. We accepted, although we did not feel that one extra dive was worth what we had been through. I did not argue about it because I wanted a sincere acknowledgement of the situation rather than material compensation, and one cannot force that from someone.
Partway into our stay, we were hit with a severe tropical storm. A pair of divers went out right as things were starting to pick up (not sure why the resort thought that was ok), and the weather worsened as they were underwater. The swell got higher and the captain (different one from ours) was no longer able to follow the bubbles and LOST HIS DIVERS. He drove the boat back to the island without them. The divers and divemaster surfaced and there was NO BOAT to pick them up-- every diver's worst nightmare, come true. They had to swim for an hour, in high seas, back to the island. I believe that that captain was relieved of his duties.
In summary, Isla Marisol is a lovely place, but I would not trust them with your lives. In our situation, they had a choice to make in the vessel that they took us in across the open ocean. They made the wrong decision and gave us the most terrifying few hours of our lives. It was not an accident. It was a result of their poor judgement. I cannot imagine how it would have been if children or elderly people had been traveling and not us. In the case of the other divers, they made a poor judgement on the weather, and endangered the lives of the divers by stranding them out at sea.
We did manage to enjoy the beautiful reefs, the yummy food, and the sweet staff, which are the only reasons for my two-star rating instead of one, but the disregard for safety is what would absolutely keep us from coming back, even if we were offered a free trip. Not worth it, in my opinion. Both of the situations I described could have been prevented. What happens if an accident or emergency were to happen on Isla Marisol? I don't want to be there to find out.
If you go, make sure they promise that they will take you to the island in the big boat. And good luck.