In the east, so on the right side of the plan, is there no window at all in the living area?
It will probably be darker because of the projecting other apartment in the west.
I myself have an apartment with east/south - open space (dining/cooking/living). On my east side, the terrace is covered to a depth of 360 cm. Pleasant in summer, in winter the sun is rather low so that even sunlight comes in through my east terrace door.
It would also be important to know what is standing at what distance to the south? And, on which floor is the apartment? And how tall is what is standing in the south?