Grad Student looking for 1 BR in apartment share

Attending Graduate School for 2 years and am looking for an apartment share. I have brothers and a sister, hence am used to all types within a household. Having shared apartments (private bedroom) while at school, I have a good sense of what it takes for a successful room share experience. I must commute to E Harlem at least 2 days/week with an internship (unknown location) 3 days/week. Easy access to either subway or cross town bus desired. Looking to enjoy my neighborhood on off hours. I do not smoke nor do drugs. I'd like a pleasant environment where roommates can be social or have privacy. If possible, natural light in the BR is important so that I can also study in my room. Cleanliness and respect for one another is key. Am fun to have around.