Place is just a few minutes from Shinjuku by train and 1 min walk from Sasazuka station.
Room is very clean and I loved the bathroom which is big and water pressure from the shower is awesome!!
Staff is not always at the reception and when you want to check in, you need to make a phone call. I saw many foreigners having no phone function with a Japanese SIM card and asking for a help to others which needs to be improved.