Connecting travellers with service providers for efficient and affordable service by the use of the block chain technology is a great idea.
I thought the main idea of the project is to combine all necessary traveling things in one place, like booking of hotels and rent a car in one place, but not connecting travelers as some social network. Correct me if I'm wrong.
I also think that the second option is more accurate and correct. In my opinion, you have well explained the essence of this project