Is feng shui good in the upstairs toilet and downstairs restaurant?

No, it's a taboo in Feng Shui. The upstairs of the restaurant happens to be the toilet. From the perspective of geomantic omen, the dirty air representing the toilet is distributed to the middle. This gas field will interfere with the cooked vegetable rice, and the bad stench will cause health problems when eaten in the stomach. However, nowadays, it is sometimes difficult to avoid a small number of apartment buildings. Some feng shui experts believe that as long as the dung pipe is not opposite the toilet, there is basically no big problem.