Marutomo's hotel had a great auto confirm process that got me out of a quick pinch. I had originally booked another airbnb, only to discover it had no wifi (my bad for not reading carefully) and no AC in the bedroom. I was able to instantly book the hotel and check in within an hour.
The location of the hotel is great, only a few blocks from the Akihabara station, which made it very convenient. The space itself was cozy but efficient, perfect for a weary traveler's needs. I highly recommend staying at Marutomo's and will definitely visit again when I return to Japan.