For March, 2016, for 2 nights, for under $300/night.

Heading down for a cruise on the 14th, but we're flying in late on 3/11. Will stay at an airport hotel and pick up a car the next morning and head to the beach and to Jupiter and/or Port Saint Lucie for some spring training ball.

Hoping to stay on the beach, but the few properties I can find are all $400 and up.

Not willing to do airbnb nor use an opaque site, just want to book something clean and close to the water (crossing A1A or similar is OK).

Tried using search engines but I couldn't find how to specify closeness to the beach.

Thanks for the help!