The place is really close to the local train station. It's one train to get to Ikebukuro and if you want to get to other major areas like Shinjuku/Akihabara, you will have to transfer trains, which isn't a problem in my opinion. The space was tiny (as mentioned in the description), not the best if you have 3 people and large lugagges like we did.
We were a little disappointed that the building didn't have its own wifi and we had to rely on the pocket wifi which has a 1GB limit per day. The wifi supposedly would become really slow/not work after we reach 1GB, but we found that the wifi became really slow despite us not using it much. We avoided watching videos or using it as much as possible, yet it still slowed down by the afternoon. In the end we had to rely on free wifi at stations/cafes to Google maps and screenshot our way to places.