I agree with Aslan... most people will react initially with fear when it comes to snakes - but I've been around a long time and know that if you present your case and your animals in a positive way - almost everybody comes around to being more curious and interested than afraid.
This may not be the case with the person who has made the complaint in the first place, but that may not matter if you can swing the other members of your body corporate onto your side. Present an agreeable front, invite them to see your animals and setups (make sure thay are ABSOLUTELY spotless and well presented), and just be firm but pleasant. As soon as you become aggressive, you're on the way to losing the battle, and it gives them another reason to poke sticks at you. YOU need to take conrol of the situation, and retain it. If they actually like you as a person, you're probably more than half way there.
This is a serious and stressful situation with the potential for a very long-term ongoing problem, and there have been a lot of silly and unhelpful comments. You may not feel too much like it atm, but keeping the communication lines pleasant and open will achieve far more than becoming aggressive/defensive.
Are there any othe reasons that may suggest the body corporate has a problem with you living there? - Noise, mess, unruly behaviour? Just asking so you are sure the slate is pretty clean...
Good luck, Jamie.