It’s possible they’ve changed it since I applied, or that I’m misremembering (though I think I doubt it, but who knows), in which case sorry for the misinformation. If you’ve picked your preferred halls, then odds are good that is the only choice you’ll be getting, or at least the only choice until the RD people get their say.
I lived in Lipton when I was a freshman (though it was called Hayden back then) and it was really nice! I was actually in a suite with a triple and a double (I was in the triple) and a bathroom and the rooms were pretty big. Now that I think of it, one of my close friends was in a triple without another bedroom attached in Lipton as well, though hers was a bit smaller than mine–maybe it was low cost? I don’t know if I would call it a studio though–there wasn’t really a kitchen, just an attached bathroom.
Have you taken a look at the residence hall floorpans yet? They might help you get a sense of the size of the halls and what the rooms are like: https://www.nyu.edu/students/student-information-and-resources/housing-and-dining/on-campus-living/residence-halls/floor-plans.html
One of my close friends lived in Third North and I think she enjoyed it. Third North is a bit more of a trek, but you get a kitchen because it is apartment style and I think that makes it worth it. My sophomore and junior years I lived in Lafayette and Greenwich which are some of the most distant dorms from the main campus (or at least, from the Tisch building where I spent most of my time). They were both something like a 20 or 25 minute brisk walk from class, but I figured out from that experience that while it seems pretty far from the classes, you get used to that really quickly. I actually enjoyed those walks because it gave me a chance to wake up before class or unwind after class and it made me feel better about never really exercising. It also depends on where your classes are–as I was mostly walking to the Tisch building (number 48 on this map: https://www.nyu.edu/content/dam/nyu/advertisePublications/documents/nyu-downloadable-campus-map.pdf), the walk from Lipton was probably almost as long as the walk from Third North, just a bit more direct with less stop lights. If I were walking to GCastle (73 on the map) that would be another story.
Also, NYU has a really good free bus system, so if you don’t want to walk all the time, that’s fine too. I took the bus a lot from Lafayette if it was really cold and it worked pretty well.
The social aspect of the residence halls is kind of what you make of it. Its easy to make friends in the first few weeks in by sitting with new people in the dining halls, even if your floor isn’t the most social. If you are looking for a really social vibe, I’d really recommend applying for a themed floor as they’ll have planned group activities, which is also a good way to meet people. I was on the NYU Show floor in Lipton and while I definitely didn’t go to all of the activities, the ones I went to were really fun and a good way to hang out with people from my floor. Your RA will also work to make sure you are meeting new people and that the floor gets together a lot, especially in the first few weeks.
I hope this helps, and let me know if you have any more questions!