The place is nice and host are accommodating. The location is not exactly in JR Shinjuku station, you have to transfer to Oedo line and two more stations. As expected the transfer in Tokyo is quite confusing so I suggest to take taxi which only cost less 1000 yen.
The place is surrounded of bars and restaurants, so it’s noisy at night. Not sure but there’s always a police and ambulance around the area.
The room is ok but mind it’s shared space so you will share on one toilet and washroom.