Essentially, a smart hotel is a hotel which makes use of internet-connected devices, which are capable of communicating or interacting with one another. This is sometimes referred to as the Internet of Things (IoT) and means that even ordinary devices or appliances can send or receive data, making them 'smart'.
The ability for these devices to communicate with one another can allow users to control multiple devices from a single control point, such as a remote control, smart phone, tablet or smart speaker. Moreover, devices are often able to find and use information from the internet, allowing them to respond intelligently to user requests.