These 2 bldgs are both on the ocean side..
www.decoplagecondominium.com or
www.roneypalacecondo.com
be prepared that if you live on that side of south beach (beach side as opposed to bay side) it will be crazy. There's always tons of ppl around and is party central..Clubs restaurants, bars, hookers ;)
If you want a fun place to live on bay side.. check out the
www.flamingosouthbeach.com
The pool scene on Sunday at the flamingo is second to none.. Place is probably 1/2 Hot girls but be prepared for a college type atmosphere

If you live in south beach u hardly use your car, u can drive a scooter or bike everywhere..
Also, tampa and south beach are very different..like night and day.. If you want fun, sun, blue water beach, hot girls, Caribbean style living, miami beach is the best.. if you want to drive everywhere and deal with rednecks.. tampa is more your speed ;)