This is the best room I have stayed (out of three accommodations I have used) so far.
Masami has catered for many things inside the house. Little things that will help your stay more comfortable, such as:
Hand soap pump at the basin, bath and toilet cleaning products (if you are bath lovers, you'd want to clean the tub after each use, right?), coat stand, pegs to dry your socks as well as plenty of hangers. There was even a scales to weigh my suitcase and some basic seasonings in the kitchen. There was a grill/toaster (not the pop-up one) so I was able to enjoy toasted bread each morning. There were umbrellas also for your use if it is raining outside.
The room is close to the station and there is Daiei supermarket next to the station, 100Yen shop and several convenience stores and eateries nearby.
Easy access to Shinjyuku and Roppongi. Very quiet neighbourhood.
I'll definitely look forward to staying here again.