If you don’t mind walking from the station, it’s actually not that far and is pretty convenient. Right outside Nishiaraidaishi-nishi Station is a Belx (supermarket) and on the way to the Airbnb you pass by a Lawson, a 7/11, a taiyaki store and even a yakitori store. The Airbnb is near a Daiso too.
I personally love commuting in Tokyo so I did not mind the walk to the station and the transfers. Nishiaraidaishi-nishi Station is one of the stops on the Nippori Toneri Liner which connects you to Nishi-Nippori or Nippori Station. From there, you can pretty much take any train to around Central Tokyo like the Yamanote Line or the Chiyoda Line.
The Airbnb itself was clean and like it was in the pictures. The room is small and cozy, too. I had everything I needed. The walls are not that thin but if someone’s in the kitchen you might hear footsteps and a little conversation (but of course it’s blurred out) from other rooms. But nothing that would disturb me from sleep.
Overall I think it was a good value for money!