the difference lies in intelligence, personalization and high efficiency.

1. Intelligentization: In the era of Hotel 2.1, intelligentization began to appear, such as intelligent services, but in the era of Hotel 3.1, intelligentization deepened, and all kinds of hotel services and facilities were closely connected with intelligentization, such as intelligent passenger control system and intelligent hotel management platform.

2. Personalization: In the era of Hotel 2.1, we began to pay attention to personalized services, such as providing customized room layout and personalized catering services. In the era of Hotel 3.1, personalized service is more in-depth, and hotels will provide more intimate services according to guests' preferences and habits, such as intelligent room service and personalized catering service.

3. Efficiency: The hotel began to pay attention to improving service efficiency in the era of 2.1, such as adopting self-service check-in/check-out system and intelligent guest control system. In the era of Hotel 3.1, efficiency is more important. Hotels will adopt more intelligent management systems and service means, such as intelligent room reservation system and intelligent check-in/check-out system, to improve service efficiency and quality.