We recommend the following hotels, which are conveniently located along the Tokyo Metro Namboku Line (Emerald Line) and offer easy access to the University of Tokyo (Todaimae Station). The Iidabashi area also has many other accommodation options; it is well connected not only to the venue but also to major sightseeing areas, making it a convenient base for your stay in Tokyo.
For "Toggle hotel suidobashi" and "Hotel Metropolitan Edmont Tokyo", it seems that booking through sites such as Expedia is cheaper.