You are within steps from the best tsukemen/ramen in Tokyo if you live here. Menya Musashi, Menya Sho (right downstairs), and Ramen Tatsunoya.
Upscale, renovated, modern room decor/amenities. Extremely comfortable roomy bed and sofa bed. With 4 people and sofa bed use, there is essentially no room to walk around and for luggage, so it will be cramped. Toilet, shower, and sink were top-notch although shower is a bit complicated to figure out but a user manual is provided. Washer/dryer provided and AC/heater to control room temp. Kitchen was a bit scantily-equipped - no utensils or knife, etc. Pocket Wi-Fi was a bit finicky - hard to charge, occasionally disconnected and or shut down.
Overall, beautiful home in central Shinjuku - loved it! Comfortable and aesthetic and clean. About 10 min walk from Shinjuku rail station, Omoide Yokocho, Kabukicho, etc. A few stops away from Tokyo station + Shibuya station. Lots of convenience stores nearby. Very safe area. Midori was great - prompt and responsive and informative. Would definitely stay again! Great experience.