The FAQ on the website states that:
We do not currently want to express intentions to list BERRY tokens on the exchanges. Therefore, any tokens that you may see listed on an exchange are not supported by Rentberry and we make no representations or warranties regarding the safety or usability on the Rentberry platform for BERRY Tokens purchased on an exchange.
So, let's say there will be no exchange listing.
The tokens will be issued within 30 days after the end of Token Sale. They will be initially available at your Cryptonomos account. Afterwards, you will be able to transfer them anywhere you want.
Where would "anywhere" all be then? Besides another person's wallet.