I'm the listing agent for 20 South. Yes, the complex is pet friendly. In fact many people have pets and plan to get them soon! As of Spring 2011 there is still no size or weight limitation.
Come on by. You can reach me at firstname.lastname@example.org
Often there are restrictions in condos as to how many or what size pet is allowed in a given complex. Below is a link to the site of the listing office . You can try calling them directly or if you have a buyer's agent, have your agent call in the morning and get more info! They are nice new units!