Great location in Koenji, a really music friendly, hip part of Tokyo to stay in. Tons of food options very close. There is a Bar on the 2nd floor owned by a very nice lady, you should stop in one night while you're there. We never had an issue with noise but, I did see that they have live music sometimes which might be louder. The Apartment itself was very clean and plenty of space for 2 people to lay out all of their belongings, etc. It would be pretty tight with more people, but definitely doable. I would absolutely stay here again my next visit to Tokyo.