The staff is the one in the hotel when the guests will receive a warm welcome from hotel staff.The hotel staff when guests stay will want to pray to and attentive but not pushy at all times and provide instructions.
Concierge service is one in which the guests will be welcomed as well by the hotel staff , the hotel staff who stayed when I have to respect and smiling all the time and waiting for instructions.
Receptionist service is one in the hotel when guests are welcome as well from the staff of the hotel, hotel staff found that when visitors stay must respect and smiling is clear at all times and wait for instructions.