Leo, sorry to be so late answering. Yes, the IRS requires that you report the fair market value of housing, transportation and certain other benefits as part of your salary and compensation package. In certain cases such as if you are required to live in housing owned by the company you MAY be exempt. You must also follow all the requirements for the "foreign income tax exemption." You will need to consult a tax professional - probably before you leave the US - to make sure you don't get a nasty surprise later!
Mandi