You cant beat Aya's apartment for both location and value. Cheaper than the next best alternative by far and although the room is basic it is clean and has everything you need to crash. Ikebukuro is a very cool neighborhood and incredibly well connected with three train lines and a direct departure to Narita airport on the NEX.
The beds are super firm so be prepared for that. There's also stairs and no elevator for access. Would definitely book again for the proximity to station and for the exceptional Tokyo value. Thank you Aya!