"Its Okay, not amazing"
Lenox ave on Miami Beach is a very two sided street. The Lenox ave closer to Flamingo Park is very quiet and peaceful. The Lenox ave near 5th Street is full of homeless and drug dealers. Oddly enough they hang out in front of a Church, so if you think that having a Church nearby helps the neighborhood - think again! The Church gives out free lunch which attracts the riffraff from all over the Beach. So be careful on this part of Lenox. But the Lenox near Flamingo Park is excellent, not much traffic and very quite. There are also some very quite condos on Lenox. So just make sure you stay away from 5th street.