Takeaway is not allowed upstairs in the hotel. Can I complain?

The hotel clearly claims and provides the service of delivering food to the room, but refuses to provide the service for the takeaway staff, and can complain about the hotel's behavior. You can choose to complain to the relevant platform or consumer association, and explain the situation and dissatisfaction in detail. These institutions will investigate such violations and take corresponding measures to protect consumers' rights and interests and maintain a level playing field.