There is everything good. The
gulf coast is not super-popular among cruisers, but I knew someone who was writing a cruising guide to it many years ago. Veracruz had a few cruising boats last time I passed through, and as you get to the
Yucatan, things get very pleasant. Isla Mujeres is a huge cruiser's
destination, Cozumel is not half bad, and
Belize is just a little way south.
While the political situation (where you can
anchor, where you can't, where you must pay extra, where it's dangerous) is always in flux, especially around
Belize, there's no better way to find out that to
head down there and see for yourself.