Airin's apartment is roughly 10 minutes from the sagenjaya subway station.It's in the suburbs but still nice and close to transportation and districts like shibuya.
Airin was really welcoming and even met with us to welcome us to her Airbnb. She was in contact pre/during/post stay, even suggested some nice places to visit. (FYI she is also fluent in jap and mandarin, if that's your main lingo)
The Airbnb is a compact studio on the second floor up the stairs; with the living space (tatami area) being the sleeping area, with partition doors. We stayed as three adults, I really wouldn't recommend more than that due to luggage space required, but if you have less than three large suitcases you might be fine.
The kitchen, bathroom and toilets are all nice and clean and in good working order. It's handy to have a washing machine except our clothes took a couple of days to dry due to lack of air circulation (?) while we are out.
On the Main Street towards the station plenty of food choices and market street. There is also a Toyota car rental shop a couple of blocks away.

Thanks Airin for the pleasant stay! (中文不太好，所以就用英文review了