If there is no north window in the living room, there will be no convection between the north and south air.
3. Generally, the master bedroom has only the south window. If your second bedroom is a west window, there is no convection in the air.
As you said, your home is the "southwest corner". It seems to be a high-rise building, and there is no convection in the air, so the house on the mountain is a little cold in winter.
If you want to live comfortably, you'd better have windows in the north and south of the hall, which will provide good lighting and ventilation. If it is a two-bedroom apartment, it is best to have north-south convection ventilation.
6. You said less information. I don't know where your entrance door is, is it multi-storey or high-rise? Bathroom, kitchen and several bedrooms. If you can, you can add some information. Maybe everyone can help you.
I wish you an early solution to the problem.