The host is very very kind! One of the best hostel experiences :) It was nice having a private room, but the wall leading to the hallway has (stylish and purposeful) holes so it’s easy to hear the other guests. Even so, it’s pretty quiet but if someone is making noise you will definitely hear them. The bathroom was really clean and the room was clean and comfortable. The door only locks from the inside but there is a safe inside the room you can put your valuables in. I would definitely recommend this place and I would stay again if I need a quick place to stay close to haneda airport - the location is very close to the airport!