Café Ambrosia in 23rd and 10th has the matcha you want and the sanctuary vibe you need
What makes a coffee shop great in NYC is (i) a clean, cozy, not-too-crowded ambiance that lets you alternatively work on your laptop, read a book (or your phone), or chatter, and (ii) a drink and pastry/food selection that keeps you there past as single drink. Café Ambrosia on 23rd & 10th is somebody who can do both.
The block-approved move is to get the iced matcha—there are tiramisu (which comes with a ladyfinger on top), strawberry, and yuzu options—and a pistachio croissant. From there, take a seat in a comfortable chair and at least think about doing something productive before completely failing to do so and then just getting the Japanese yuze cheesecake. You only live once, guys, and there are only a finite number of cheesecake opportunities any of us have left.

