Why did the hotel cleaner enter the room to scan the code?

Explain that this hotel has a marketing plan to order food online, and he asks you to scan the QR code. This will increase his online sales turnover. This figure can be found online. In the future, if people want to book rooms online, they can look for sales in front. It can be seen that his sales performance is better. Inadvertently become a hotel advertisement. It can achieve the goal of keeping more people in the store.