Main advantage for me was the closeness to a metro station on the JR Yamanote line. Particularly useful if you have a JR rail pass (strongly recommended!) and plan to do a lot of travelling. The hosts are keen to provide you with meals but this may be less desiable if you have limited time and want to devote most of it on seeing the sights rather sitting down to a meal. Communication was difficult at times due to the language clash. The room is small and has limited space for clothes storage but the bed was comfortable and the toilet for just my use was appreciated.