The apartment is where Kobato Hanato lives and is one of the main points of the Kobato. series. The apartments are managed by Chitose Mihara.
The double room # 101 is the residence of the owner Chitose Mihara, her two daughters Chiho and Chise Mihara, and possibly her husband.
Is the the room for Kiyokazu Fujimoto.
It is the room in which Kobato Hanato and Ioryogi live together. The room was found for her by Sayaka Okiura, as the landlady is a friend of her.