Just go on Google or any travel website and search for refundable hotels. These bookings are real, just that you can cancel them by a certain time with no cancellation charges.
Also, providing trip plan details is good but in determining your home ties, vo looks at a lot of factors. As an example not being employed, not having any strong ties in home country, past history of Visa overstay are all examples of red flags. In such cases, hotel stay will not help much
