Hello MrzzDeadpoolzzz!
Well, cheat codes is a good idea, but we prefer to focus on other things for now. Maybe in the future.
If you really want to use cheats, you can go to the save folder (C:\Users\%USERNAME\AppData\LocalLow\Avr Games\Hotel Tycoon for Windows), open the saved file with notepad and edit the number between saveMoney (<saveMoney>this number</saveMoney>).
But, thank you for the idea!