If you live in an apartment with neigtbours in the same building you are not allowed to emit cooking smel all the time and making noise while washing dishes.
Also ask your hubby what he thinks about getting the kitchen crammed with cooking equipment.

It is very difficult running a hospitality business in switzerland, the cost`s are very high. The rent for a restaurant at a good location with parking space is very high and less frequented or runned down places hard to build up.