It's one of the most common studio apartment layouts: one big room with windows along only one wall. Which leaves one to ponder, what gets primary exposure to natural daylight: the living area, sleeping area, dining? Here are a few takes that work well:
Living along Window Wall
By arranging the living area along the window wall of the apartment, daylight is afforded to the space where you're likely to be most active during daytime hours. The advantage here is that the bedroom, where daylight is less of a priority, is further back in the space, away from the windows. The problem is that that often puts the sleeping area between the kitchen and the living/dining area.
Sleeping along Window Wall
Here, the bed is at the window wall, putting the kitchen, dining, and living areas together at the rear of the apartment. This might be preferred for entertaining, as the bed does not disrupt the continuity of the more public functions of the apartment.
Living and Sleeping along Window Wall
With a narrow bed or a wide window wall, both living and sleeping functions can be arranged with access to the window wall.
Do you have a studio with one wall of windows? What layout did you choose?