The couple also rent out the chateau as a wedding and party venue, so earn a decent amount from the lavish building.
The typical cost of a wedding for a maximum of 80 guests allowed is more than £34,000.
Holidaymakers can also stay in the chateau if they wish.
It can cost around £5,000 to £6,000 to stay at the lavish castle, but the prices and availability change often.
However, with the coronavirus pandemic the pair are not currently renting out their chateau, and weddings may not be going ahead.