You can not use eth btc or something else to book, make deposit, get a refund if someone brake a contract and so on.
How its going to be at roomdao.com - you choose an accomodation, contact with host, sendind rdc to him like prepayment. But this payment gets to our escrow.
When you arrive, a flat looks great, you made a checking and the host gets his ammount.
but if the flat is horrible, host didnt get an amount and you will get it back! That what signed at smartcontract and thats why we need RDC!
Also we use RDC to invite members to platform, like referral system, user activity reward, dor2door marketing and so on!
The full info you can find at the website www.roomdao.io