I'd like to pay my rent with bitcoins woot.
Anyways, in order to accept bitcoins all you need is a bitcoin address and you're good to go.
You can either download a bitcoin client or use an online client.
If you live in the US I recommend coinbase or you could use blockchain.info
Here's my referral link to coinbase
https://coinbase.com/?r=520a6c920801f4a35d000057As far as advertising there is the trade portal at the bitcoin wiki
There is no real estate portals as far as I can tell so far though
Thank you for your contribution to the bitcoin economy sir and hopefully we will see more people like you in the future