Extra Costs

📄️Get the extra costs of an apartment

Returns the extra costs stored for the apartment.

📄️Update the extra costs of an apartment

Sets the apartment's extra costs (cleaning, deposit, taxes, optional services). The list replaces all stored extra costs: always send the complete list; an empty list removes them all. `id` is your own identifier, must be unique within the request and is sent back with bookings; a `FIXED` price needs a `currency`, a `PERCENTAGE` price must not have one.