Akimaro was extremely responsive and clear in instructions. The airbnb was very near to the station and it’s easily located. The station is a couple of stops away from Shinjuku station which makes it pretty convenient but the line does not always have a direct stop (it is a sub branch).
There were 3 floors and I forgot that Tokyo houses has steep steps and small toilets. Beds were great and heating was sufficient.
Do note that there are no doors to codon off each room for privacy, only doors at the entrance of each level.