You are NOT allowed to post rooms that you have made on a Habbo Retro as they can advertise the site itself. Posting retro rooms also break the Habbo way and therefore break the forum rules.

Here is the specific forum rule:

A6. Do not use this forum for any illegal practices, including but not limited to:
  • Being involved in hacking or encouraging hacking.
  • Breaking of the Habbo Way or encouraging T&C violation.
  • Posting warez or other illegal downloads.
If you find that someone has posted a retro or advertising a retro please report them using the report button