Sayako-san's place is in the perfect location of Shinigawa. It is far enough away from the busy commuters that you never have to worry about noise and close enough to some amazing local izakayas at night. It is 10 minute walk to Osaki station and 15 minute walk to the closest subway. Right there makes it one of the easiest places to venture around Tokyo.
She offered to drive us to the bus stop when we checked-out which made the process of getting back to the airport effortless. We can't thank her enough for that alone. This apartment made our entire trip perfect.