Don´t worry if the place is near the Tokyo Detention Center. I didn´t realize until one day prior my arrival and I was somewhat afraid. Fortunately, I never felt unsafe, on the opposite, I think Japan is a very safe place overall and I could see people running at night without issues. I also think that because of that, the surroundings are safer. I returned to Joe´s place from Kosuge station at night and it was fine all the time. Going specifically to Joe´s house, I think it has all the amenities that you need. Probably a dryer machine will be an extra but I found that is not that common to have this in the places that I rented after. The only small complain that I have which is NOT Joe´s fault, is the distance between the house to Kosuge station. I traveled with 2 childs and moving all the bags was a little bit complicated. The walking distance is considerable if you are carrying big bags or need to travel with kids. If you pack lightly, this shouldn´t be an issue. Keep in mind the place is not really close to main attractions and Kosuga line is NOT part of JR lines, you will need to buy a ticket or have an electronic card ready, fortunately is only one station to commute.