Without seeing it and taking into consideration a lot of other details it is hard to give an exact estimate of how much to rent your apartment for. However, I've seen apartments similar in size and location to yours renting between $1,800-$2,500/mo. depending on the time of year,condition of the apartment, etc.
I would look online at what others are asking for rent on Craigslist, trulia, hotpads, etc.. And compare your unit to those. You don't want to be asking for the the highest rent on the beach but you don't want to lose $$$ either. Keep in mind that spring and summer months are quickly approaching and those are months that more people are thinking "wouldn't it be nice to live on the beach?"
You've got a great location working in your favor in addition to there being a very LOW inventory of similar available units. Good luck to you!