Great place and lovely host (met once and was kind), was offered to contact if I needed anything which I didn’t have to as everything was provided
Check-in - easiest process ever (lovely after 24 hours of travel and being exhausted)
Location - 6 min walk from station, about 15 min total journey to Shinjuku station
Bed - comfier than my one back home... you just sink into it and asleep in no time. Pillow sinks in too and a nice big duvet
Amenities - shampoo/conditioner/body wash/shaving cream+gel and bar soap
Cleanliness - overall very clean
Washing machine - extremely easy to use, machine has english, detergent and fabric softener provided
Bathroom - nice shower that heats up in a few seconds, heat control that speaks to you (not sure what it says!), the room does get cold throughout the day (March)
Kitchen - small but all that you need, kettle, microwave, small oven etc.
Wifi - good speed, did drop out for a few minutes a couple times but other than that stable
Convenience - there is a 7/11 roughly 5 mins walk and a supermarket not much further
Other - theres a nice work space with a comfy wheelie chair and also a drinks vending machine about 20 steps away! (100 yen for 550ml water and other well priced variations) Near the bed is a heater/air con machine that does its job very well.
My only negatives were watching my head on the bathroom doorframe and fitting in the bath due to my height, I would guess that the doorframe is about 6 foot. (6 foot 4 or 193cm) But these were very minor issues for me personally.