According to my family's experience, the ranking of ancestors is placed in the corner of the living room, which is not only bright, but also has enough space to build an altar. You can make full use of space under the altar to make a shoe cabinet, locker and so on.
As for the position you said, this cm washstand has nothing to do with it. The key depends on how wide your aisle is. If the aisle is wide, you can be in this position, and the ranking will not be too prominent. If there is no corridor, then you should consider finding a seat in the direction of the living room.
There is no professional feng shui, it is all about worshipping ancestors, and sincerity is spiritual. I wish you happiness!