first of all,
if you don't mind staying a littleee bit outside the city crowds and mind to walk 6 mins to the closest station, this place is definitely for you.
the room is capable for 6 persons but i recommend 4, 5 is just enough.
it has everything you needs. full equipment kitchen, comfortable bedding, separated toilet and bathroom, hairdryer, washer, iron per request, stable and fast wifi, decent cupboard to store the luggage, domino is just downstair, 7 eleven 2mins by foot, donki 6mins by foot, supermarket 6mins by foot also.
and i recommended to use shimo-itabashi as your daily station, since it's 100m closer to the apartment than from kita-ikebukuro station, around shimo-itabashi there are a lot to see such as matsumoto kiyoshi, supermarket, matsuya, ramen etc.
if you have JR Pass the closest JR station will be itabashi station, and it's 8-10mins walk.
the conclusion is you'll not regret staying here :D