Great place for group with possibly the best location.
We stayed at Ryota's place for 5 nights with 8 people. The place offers many separate rooms so it is very convenience for the stay. Sparkling clean and packed with basic equipments you'll need.
Lovely features about the place is the fully equipped kitchen and Japanese-style bathtub. We were able to cook a proper meal for everyone with the provided kitchenware. A proper dinner table separate from a living-room-style table to mingle afterwards. And should any of us fancy a bath, the tub is available for us to relax before bed.
Above all, the best thing about the place is its location. It allows you to explore every part of Shinjuku on foot. So there were plenty of restaurant, bars, and shops. Convenience stores are just around the corner and there were many for your choice. Also a local supermarket nearby which is why we could get some groceries and cook the meal. Definitely recommend for everyone and sure will stay here next time.