I love the vision, as a traveller myself. Very interesting ICO. I predict great potential but a lot needs to be done for marketing and branding as this industry is a very competitive one.
As per my knowledge and experience, Social media would be the best platform for the marketing of the Goeureka services as most of OTA's are currently using Social media only as they cover almost everyone one way or another.
As ICO is still on for Goeureka they might be able to gather enough attention from the investors to make this project a huge success.
Not only marketing through Social Media but hotels partnering with Goeureka will also be indulged in marketing for their own benefits as they will be making profits through this Goeureka platform. Re-targeting the existing customers will play a important role to retain them.