It's a nice enough flat: it's clean, comfortable and the location is good. It's not super clear in the description that there is another room in the flat separately rented out: there's a bathroom each but the kitchen and living area are shared. The big problem I had was that it isn't that quiet - not only is there noise from bars until late, the recycling truck comes early every morning to empty the bins outside.
In terms of finding it, as Lorenzo says, both google and apple maps don't take you to the address. However, they both correctly take you to Koto Ramen which is next door to the flat.