My wife and I stayed at SoBeYou for a couple of nights and really enjoyed it. No street noise. Whole Foods was three blocks away. We rented bikes and spent some very nice time, pedaling around Miami Beach. Missed Magic Johnson (he was walking on the beach) by five minutes. Rats.
The back building we stayed in was a bit tight, but is due to be completely renovated.
Denise, the manager, and Lola, the concierge, were very professional and made us feel very welcome.
When we head back to Miami Beach, this is where we will be staying.