Summer School in Tokyo Accomodation

Hi guys! I’ve recently been awarded a scholarship to go to summer school to learn Japanese! The school is IES Tokyo Abroad. The problem is, they are not providing residence halls and I’ve been having some trouble finding cheap accommodations that are nearby. Anyone have any advice? The school’s address is here: Japan, 〒261-0023 Chiba, Mihama Ward, Nakase, 1 Chome−7-1 SCECビル3F