Harlem is in the midst of a HUGE gentrification, with grand old brownstones being reclaimed and that is outside of SUGAR HILL, which never did get laid waste to.
And old apartment buildings, at the lower edges of Harlem, have already been yuppiefied, with young married couples with small children moving in, in large numbers. It's been sort of a reverse RED LINNING kind of thing.
Clearly I am, apparently. :) Is it Spanish (Puerto Rican) east Harlem or black Harlem, or both?