Great long stay during low season. The surrounding area doesn't have a great deal to offer in terms of sights and restaurants, but it's quiet, clean and safe. There is a pool and a gym however which is only a 2 min walk, only costs about 400-500yen to enter which is great, and a nice big park you can run in with a small outside gym area. Isao will show you the highlights of the area if you ask him for a neighborhood tour, which I recommend. There are a few great izakayas and restaurants in the area if you do a bit of research. Tsune Sushi, which is about 12 mins walk away, is amazing, and very friendly, but they don't speak English or have English menus. The best bet is just to go in and sit down and say omakase o kudasai. And maybe say your budget. I recommend you say your budget and what you don't like to eat and he'll just make you random awesome sushi. Next, the izakaya 須賀乃湯 ("Suga Osamu Yu") is cheap and extremely welcoming. Big recommend. The accommodation is about 15-20 mins by train from Ikebukuro which is where you'll almost always be transferring to other places around Tokyo, but Ikebukuro itself also has alot to offer.
Also, if you get the chance to go see one of Isao's live performances you should, he's a great drummer!