The different views of the skyline are unbelievable. I especially like rooftop views from different apartment buildings. Try to get on top of an apartment building. This is the view from my apartment...
My favorite restaurant to pop in spontaneously on a weeknight. Get the lamb burger with sardines and a mezcal negroni. It also has my favorite looking bathroom in NYC.
A legendary basketball court in the West Village that is a popular destination for basketball aficionados, deflated hoop-dreamers, and gawking tourists.
This is a pro tip, but also a summer tip, take the ferry from Lower Manhattan to Rockaway and spent the day. The beach is great and the area is impossible to gasp that it's 30 min from Manhattan (without traffic) - Eat as many tacos you can, cause it's the best in the state of New York!