I am also seeing the same results, and unfortunately, those are too expensive for our budget. Thank you for the advice on the 1 and 2* star hotels because I was almost convincing myself to book those.
I ended up looking near Tokyo Station instead, and those hotels were a bit cheaper. I went with Hotel Villa Fontaine Tokyo-Hatchobori for 5 nights through a different travel website.. That came out to $430 total for $86/night including free breakfast buffet.
Thank you again for all of your help.
Laurie