What department is in the front office of a five-star hotel?

The front office usually consists of room reservation office, lobby/concierge service office, reception desk, information desk, front office cashier, telephone switchboard, business center, lobby duty manager or lobby assistant manager, etc. The main organization is located in the lobby of the hotel, and guests come and go most frequently.

Coffee bar should refer to lobby bar or western restaurant. That belongs to the catering department.