This is a listing with the lowest price during the peak season I found on Airbnb, so I can't complain about the price, though it's still a bit pricy given the room size and facility.
Good location, easy to get to Harvard for events. Beyond the frank disclosure of room size by the host, I just want to add one thing about the shared bathroom. I think I saw three other tenants on the same floor during my 2-day stay and there were 5 rooms on this floor in total. All of us shared one bathroom. There would be quite some waiting for bathroom during peak hours in the morning. It might not be a place for a long-stay or travellers with time-sensitive plans in the morning.