1, if the area is enough, you can also install a wall in the dining room, of course, a simple wooden wall, and this three-dimensional effect and sound insulation effect are acceptable. Installing a door on the wooden wall will solve all the problems.
2. If the dining room is really small enough, you can achieve the same feng shui effect by transforming the bathroom door. Of course, it would be better if this situation was considered before the house was renovated. You can combine the bathroom door with the wall to make the bathroom door a secret door, so that you can hardly see the bathroom in the restaurant and feel at ease when you eat.