The room's on its own floor, and you can lock it, and the bathroom is also on the same floor and all yours. If you want recommendations ranging from the family-friendly to out-until-5am-friendly, I can definitely steer you in the right direction.
My place is close to the best undiscovered Banh Mi stand in the city, Starbucks (which is an unofficial city center), and lots of great food, street food and otherwise. You're about five minutes from D1 and all the places there.
Unavailable: Smoke detector
Unavailable: Carbon monoxide detector