This was a great little apartment for a 3 week stay in Tokyo! If you're coming in the summer, you don't have to worry about being too hot in the room since there is good air conditioning. The location is less central than I expected but it's still pretty easy to get to. You just have to make sure not to miss the last train on the Seibu Ikebukuro line to Fujimidai from Ikebukuro (and never take the train that goes to Toshimaen!). Also remember that this line turns into Yurakucho or Fukutoshin so it's handy to figure out the end stops to know which one it'll turn into.
The room is perfect for one person but can fit two. It is a bit intimate since there is no place to hide while changing or getting out of the shower, so it suits couples more than friends.
The room is really clean and has all the necessities. The wifi is super fast, there are lots of hangers in the closet, there's a good supply of toiletries and towels and a hairdryer. Plus there is a little mirror you can put on the desk (there is no full length mirror though). You will have to brush your teeth at the kitchen sink since that's the only sink in the room. Also, when you go and take a shower, make sure to close the lid of the toilet and take the toilet paper out or else it'll get soaked.
The location was super nice and quiet. Lots of cute little shops and restaurants and of course convenient stores! You could definitely find a good place to eat and there's even a grocery store if you prefer cooking. The apartment really is only a 3 min walk to the station. Make sure to follow the pdfs Taturo sends you (they are highly accurate!). Just don't miss a step or you'll get lost like I did.
Taturo and his family were great hosts and responded quickly and were able to accommodate a lot of my requests. Especially when I asked for an extra pillow, I was grateful to have been given one right away. And when I wanted to add an extra guest halfway through my stay, it was no trouble at all and they brought in an extra futon. It's important to know that adding an extra guest does cost extra though.
Overall it was a great place to stay and I'd definitely stay there again!