Personal preference plays a large role in your choice between a Catamaran and a traditional Monohull. While some purists wouldn’t dream of chartering a Catamaran, they do provide many features that make them a good and increasingly common choice for a variety of reasons. In general, Catamarans are easier to navigate in shallow water, provide great views from the spacious galley, have an excellent sun deck, and are can be more comfortable in a number of ways. You don’t have to climb stairs to go inside, and you get more privacy because the cabins are separated from each other. Catamarans are also more stable due to their wide beam and double helm.
On the negative side, however, Catamarans are more tricky in light variable winds, don’t point as high upwind, and don’t tack as effectively. Because they don’t have a deep keel, they get “pushed” sideways by the wind. You also don’t as often get the exhilaration of heeling in a strong wind.