This is a unique apartment and a (positive) experience in itself. I did not get to meet the owner personally, but the communication was prompt and friendly and the detailed descriptions online and in the manual in the apartment were ample to handle everything.
It is difficult to give a complete picture of the apartment. The street, the building, the entrance and the stairway (4th (top) floor) might to some be a bit off-putting at first sight. Try to think romantic industrial. But when you get used to it, it is cool. And once you enter the apartment, it is difficult not to feel comfortable. The interior is decorated with art of the owner and offers much more than a usual apartment - next to all the amenities you would expect in an apartment of this price. I appreciated the books provided. This is not a sterile hotel room, but a lived-in, real apartment. Prepare for the fact that this is a loft style apartment, bare ceiling, open tubes, make-do walls, and all the rest. And in the background you can see parts of midtown Manhattan. This could be from a movie set.
Greenpoint appears to be an upcoming Brooklyn neighborhood and feels safe. It is good to arrive at the apartment during daytime to get a better understanding of the surroundings, the building and the apartment. Once I got the hang of it, access to Manhattan is easy via subway. The G train provides quick access to the 7, E, F, and M trains. The entrance to the G train is only two blocks away (choose the correct stairway depending on destination!). There are plenty of grocery stores and restaurants close by, see the useful recommendations in the apartment. I liked the bakeries from the Bakeri bakery.
I enjoyed my stay and would certainly choose this apartment again on my next visit to NY.