We were a party of 5 adults. The house is in a quiet residential neighborhood and is about a 10 minute walk from Sasazuka station. Sasazuka station is the the first stop using the Oedo line from Shinjuku station. It is the 3rd stop after Shinjuku if you take the Shinjuku line (green colored line using the Tokyo metro map). Don't take the Special express line from Shinjuku because it does not stop at Sasazuka.
The house has 4 bedrooms - 3 of which has two beds in each and one has one queen-sized bed. Of the 3, 2 rooms have two single beds while the other one has two double sized beds. We were given the option of choosing which rooms to use because there are too many beds for our party of 5. They locked one room up which we did not use. I expected this to happen because K clearly said it in his house rules.
The house was very comfortable and was very spacious for the 5 of us. They have a beautiful plants surrounding the house. A pocket wifi was provided. The amount of data is enough for 5 people to use viber/messenger messaging and googling sites of where best to eat and which line to take to get to places. Using youtube and netflix is not advisable especially if you need the data for the prior stated uses. The television has all japaneses speaking channels. There is a dvd machine so bring your favorite DVD especially for families with children.
There is NO coffee, tea or any condiments present in the house. A block away is a vending machine with choices of coffee or tea, hot or cold. If you want to have this early in the morning, you have to procure this yourself. The kitchen has all the basic utensils needed for cooking. They also have a large refrigerator and freezer.
The best thing K offers which I did not see in other sitees, K picks you up from the Sasazuka station so you don't get lost finding the house. You have to text him when you already got your ticket and on your way to Sasazuka.