Here are a couple others in that same range, in the same area, you might like:
http://www.miamicondoinvestments.com/property/475-brickell-ave-2313-miami-fl-33131-a10285489
This is a multi-level unit, if you like a "house" feel of an upstairs and downstairs:
http://www.miamicondoinvestments.com/property/60-sw-13th-st-4207-miami-fl-33130-a10304826
This is an open modern unit that comes furnished with a Bay view (waterview):
http://www.miamicondoinvestments.com/property/300-s-biscayne-blvd-2506-miami-fl-33131-a10277940
All these units in my posts are way under 12k and have maybe 80% of the features you might have liked when you visited Miami. Most of them are in or close to downtown Miami, shopping and groceries stores, etc.