Short-term rental in Tokyo

Hi everyone, I am moving from Okayama to Tokyo next month. In Okayama, my company took care of all the apartment contract with Leopalace. I don't have that support in Tokyo.

Currently, my new job is only a 3-month contract, so I want to look for a short-term rental in Tokyo. Anyone have recommendations for websites/resources to find short-term rentals where they don't charge the 'foreigner rent'? My salary is an average Japanese salary, so I can't afford more than 70k yen rent. But it seems all the 'foreign-friendly' websites have apartments with more than 90-100k yen.

Thank you in advance!

by ConfuseHead