Sell more than just rooms.
E-commerce is probably a must-have for most businesses nowadays. Same for hotels. Traditionally, some hotels have souvenir shops but it's expensive to start and operate one. Selling online, on the other hand, eliminates the need to keep stock, reduces manpower need and saves previous hotel real-estates.
Shop in the room
One of the main reasons most travellers coming to Hong Kong is shopping. The average spending for 28 million overnight visitors is $6611 in 2018, which makes up a total of $331 billion. In the days of e-commerce, guests shouldn't need to step outside to buy things they need.