In this study, we question the value of social robots in hotel rooms to provide interactive services in a humanoid form. We conducted a field experiment in which a mechanoid social robot (smart speaker) or a humanoid social robot provided interactive services in a hotel room, and conducted a comparative evaluation. The results show that humanoid social robots increase the use of interactive services in hotel rooms and improve hotel guests’ impressions of interactive services. In addition, there was no significant difference in privacy concerns between mechanoid and humanoid social robots, suggesting that humanoid form are not an obstacle to the use of the service. These results indicate the value of the hotel industry’s incorporation of humanoid social robots into room services.
