What you see in the photos is really what the apt is like. The apt is really close to the station, supermarket and Family Mart. Both Asako and Kenji were great hosts. Asako even came to meet us at the station elevator as it was raining when we got there.
There's lots of space to open up luggage and still had plenty of space to walk around. I especially like the luggage storage space near the bedrooms. Everything was brand new and I think we were the first guests at the BnB =) The beds may feel soft when you sit on it, but it's really comfortable to sleep in. My friend tried the futon and said it was really comfortable as well.
Getting from/to Narita or Haneda Airport is really quite easy, my friend managed to catch the direct train between Narita and Nishi-Magome. As for Haneda, I had to transfer at Sengakuji.
If you arrive at Nishi-Magome Station Platform 2 like I did with luggage, just head towards the South Exit, take the elevator down and transfer to Platform 1 by taking the elevator up, you can then exit at East Exit which has a elevator to Street level.
Other thing to note if you're using the key box for the physical key instead of the Smart Lock app, you need to push down on the reset button before keying in the pin code. Then push down and pull on the Open button to open the cover. Took us a couple of tries to open the key box, just need to get the hang of it.
Very convenient to get to main tourist spots from the apt. Will definitely consider a stay here if I visit Tokyo again!