A studio is around 500 sq ft, near the size of a shoe box. I will not have a roommate because I am getting married soon. I wanted an extra room as an office area to study. Plus, living in NJ I get to have two cars and not pay $300 a month each to park them (like in the city). So if I want to go mountain biking or hiking up-state NY or even go for a weekend ski trip to Vermont, I will hop in my truck or car and go. What I am winning here is freedom to do what ever I want, not live in a tiny place and drive myself crazy, and live in a much nicer and calmer area.
The key to doing good in school is happiness. Living in 500 sq ft is not happiness to me...living in 1200 sq ft with a BBQ in the back yard and biking through near by trails is happiness to me!
If all you do is school you will be unhappy and burnout. You have to get out and enjoy life and school comes much easier.