[bmitc]

I figured, but my perception of Manhattan is that neighborhoods can change drastically from one street block to the next, so while I know the upper east side is generally, well, upper, I wasn't confident in the exact location. Also, I was just flat out lazy and didn't bother looking up the street numbers on a map, where I would have realized the proximity to Central Park.

[ghaff]

Aside from a few historically sleazy streets/areas in the past, I don't really associate those sorts of sharp boundaries with Manhattan nearly as much as I do some other cities, especially in the South. (Though, for obvious reasons, apartment buildings/condos across from Central Park tend to be higher-end than those east of there.)