First, a question - Why stay in Cocoa for spring break when Daytona Beach is only 45min to the north?
However, for kiteboarding, Cocoa is pretty sweet - And the wind blows here in March!
The Holiday Inn will probably have some people in front of it, but a 100yd walk in either direction will allow you to find a nice launch. The beach is pretty wide when you're that far north, so it shouldn't be a problem.
Wherever you go, stick $2.00 in your pocket. I swear, the ONLY people who ride the local mass transit busses are kiteboarders (Just roll your gear and try to get most of the sand off). The SCAT
(Really! Space Coast Area Transit) bus will haul your butt back to where you launched. I think there is a stop right in front of the Holiday Inn - Check http://www.ridescat.com/
Ox is right about the 520 slick. It is absolutely rock'n on a north wind - Sometimes it may get a little crowded (3-8 kiters... Crowded for around here). The legendary 'Only Girl Around Here that Kiteboards' has been sighted at this spot. It is a bit of a biznatch to launch from, but there is usually someone happy to lend a hand.
Just heas west from A1A on 520 for about a mile. You'll see a huge hospital on your right (Handy!) and a boat ramp with a flagpole on your left. There you are.
There always seems to be a slew of hottie women hanging around the beaches. Great for post kiteboarding activities!
HINT: The ones with less tan usually have less self-esteem.
Seriously, though - Also check out Daytona Beach if you can. The beach is BEAUTIFUL and WIDE. Lots of great nightlife too.