Is it okay to sit with the southwest facing the northeast?

This depends on your needs. From a scientific point of view, the northeast home may be dark and the lighting effect is not very good.

But from the perspective of feng shui, you must first know whether you are four years old or four years old before you can determine whether this seat is good or not.

Of course, orientation is only one aspect, and the external environment and internal style have great influence, which needs comprehensive analysis.