The flat is perfect for a trip to Tokyo, it's close to several subway stations meaning it's easy to get around. You can walk to Shinjuku where you can easily access national railway or go for a drink in the bar districts. The host is easy to contact and the bath is easier than most Japanese bathrooms to manage as the heater is not a gas heater. The flat is located in an area that resembles Korea town meaning there is also brilliant Korean restaurants and lots of cafes that serves "breakfast"
On the downside the noise from the street is noticeable and if you are sensitive to sounds when you sleep you will need earplugs. During our visit there was also construction during the day when the noise could be unbearable, but this will probably pass soon.