I'm 22 years old boy looking for accommodation (private single room) in Athens (with washing maching) where I can walk to Metro

I'm 22 years old student from Thailand. I'm going to study in Greece in National and Kapodiatrian University of Athens this Summer for a month plus a week. I'm searching for accommodation (private single room) where is accessible to metro station (not far beyond 1 kilometre.) Please contact me if you have room to rent or to reccommend. Thank you very much :)