Why the hell did this block have so much traffic when I visited? Really? I can't figure it out. 69th St always struck me as an unassuming cross-street, but when I was here there was a line of cars constantly waiting for the light to turn. Both Lexington and 3rd Avenues had regular traffic flow, just 69th seemed incapable of coping with the influx.
Regardless of the auto-ma-car situation, the block appears to be a rather quiet one. Granted, it's near the subway and Hunter College, but in terms of commercial presence, there really is none. Even the Chase bank on the west side of the street has it's entrance on Lex. There's a large (condo??) building which dominates the south side of the street, whose sole purpose seems to be to put signs up all over the property to ensure everyone and their dog follows the rules. They also plant that confusing cabbage stuff around their trees.
On the north side, there's a series of pleasant brick buildings...but they're nothing worth going out of your way.