Stayed here for one night on a 21 hour layover and it was nice a cozy for the two of us. Compact but well equipped with everything we needed. The apartment was very clean. One street away from Tsukiji Market.
We did get lost finding the guest house, thankfully locals were able to help us. The Guest House is located two streets away from the bridge. Facing the bridge it is you will make a left on the second street before the bridge and will be the second building on your left. If you have trouble with the address put in Tsukiji Market into your GPS and follow the above directions from the bridge.