Where is the Hotel located. Maybe you should start by investigating why sales have been on the decline. It can be a a case of the Controls not being strong enough and the staff pocketing part of the sales

Kiosk?

Thanks friends. It is in Wangige at a place with good pedestrian traffic.Have tried to spend a couple of days there and the sales actually go up. Only that I cant quit my day job to run this thing. Those wondering what type of hotel it is, it is a basic kenyan eatery. Samosa, Mandazi, chai, Matumbo, chips, kienyeji type of a place.

So its a restaurant/cafe and not a hotel.
1.Have an order book in triplicate(one copy for kitchen, one for the cashier and the other remains in the book)
2.Have the receipts in triplicate too(one copy for the customer, the other for the cashier and the other remains in the book.
3.Reconcile the above two on a daily basis and have punitive measures if they dont recconcile.
4.Have punitive measures in place for staff who do not use the order book and receipts books.You can carry out random checks or send your friend there to pose as a customer.
5.Note the number of chapatis/mandazi,samosa's are made from one packet and calculate the expected sales based on that.Also note how the number of servings in 1kg of meat and 1 packet of ugali make so as to determine expected sales per day based on the inputs used per day

Note that, thieves and liars are not consistent hence if the order book and receipt books do not reconcile;the only justification is that they are stealing from you

Impromptu checks are key