I stayed at this unit during the entire month of September in 2022; it was very well-suited for a long stay, given the combination of its price and amenities.
Location:
The unit is like a 5 min easy walk from Takenotsuka station on the Tobu Skytree Line, which made access to most places I needed to go to quite easy. There are lots of stores within easy walking distance, including Seiyu (grocery store) and Ito Yokado (department store).
Building:
The unit is on the 3rd floor of a relatively new building, and has a small balcony with a pleasant view! I'm a very light sleeper but I had no issues with sound; I heard almost no sound from the other units, and during the entire stay I think I saw one neighbor once. There is street noise from the intersection opposite the building, so I sometimes heard police sirens, etc, but it never really bothered me.
Amenities:
The kitchen included utensils, two gas burners, a washing machine, microwave, fridge/freezer, and rice cooker, which allowed me to cook a variety of things. Note that it does not include a toaster oven, toaster, or fish grill. There's also a TV which gets a variety of standard Japanese TV channels, which I enjoyed watching for language practice! Finally the bathroom has an a bathtub and electronic bidet, both of which I consider must-haves for any Japan stay.
Host:
I never physically interacted with anyone the entire stay, but Manabu was very communicative via the AirBNB app and always answered my questions promptly. Check in and out was very simple.
Overall, if you need to stay in the Tokyo area for a month, or need access to stuff in Saitama (the border of Saitama prefecture is like a 15 minute walk north from the unit), this is a great place to stay.