We are glad we have booked this place to end our Japan trip. This is a huge traditional 3 bedroom apartment mixed with modern furnitures. Clean and tidy. We had 4 adults and 2 toddlers but can fit another couple with a baby in the third room.
It was great to see the traditional tea room and the wooden bathtub however we didn't use these. Toilet is separated from shower. Portable wifi is a real bonus but it only last around 5-6hrs.
Location was great as it was only 2mins walk to Shinjuku gyoenmae station. We actually stopped at the wrong station, Shinjuku, so had to walk 15mins with big luggages and a baby but it was not so bad. Make sure you get off at the RIGHT station! Several restaurants within walking distance. If you like curry you must pay a visit to HINOYA CURRY about a few minutes walk away. Best curry we ever had!
The downside with this apartment is there are 2 set of steep stairs which you need to keep in mind with big luggages as there is no lift. We had the husbands doing the carrying up and down didn't see them complain though. The drainage in the shower was also blocked when we were there. The water just slowly drain away but it wasn't a drama for us we just stood in the wooden bathtub :) I'm sure the host will have this fixed.
Overall I would stay at this place again. We had a great time in Japan.