We stayed at a hostel on upper west side called Jazz in the Park. By luck, that place was located on the subway-line we needed the most, so we did not have as many problems with the underground as we could've (I've been lost myself many times.)
So we did some of the things you have to when you're on a tourist trip to NYC. Like eating cupcakes from Magnolia Bakery while sitting in Central Park, watching the turtles swimming in the lake. Or taking a sad selfie where John Lennon died.
But of course a must: to watch a concert every night in the village. Nice!