Check out this link-Trip Advisor reviews. Doesn't seem that great based on the first few but you can read on and see what you think (scroll down a bit to see the beginning of the reviews)
FYI-I'm flying into FLL for my MIA cruise as well and booked the Sleep Inn FLL. It's like $55/night, free transport to and from airport, and SAS Transportation will pick us up there in the morning and drive us to MIA port for $15 pp. I thought overall, a good deal. There's a Publix across the street, a Dollar Store, and few small restaraunts.