The university quarter: young, central, and cheap to eat in
Sam Yan is the university quarter, with Chulalongkorn next door and student prices throughout. Samyan Mitrtown has a 24-hour section, and the campus canteens are among the cheapest places to eat in central Bangkok, and Yaowarat's Chinatown street food is a short walk away. Rents are low for how central it is, and the area quietens noticeably during university holidays.
Tell us which unit and we'll arrange a viewing: usually same or next day. 2 months' deposit plus 1 month's rent to move in: no agent fee, and the deposit comes back when you leave.