I had a wonderful stay at Grapehouse Koenji ! It's very cozy, extremely clean, and perfect for female solo travelers who might feel lonely or unsafe at times. Here, there's always someone to welcome you with a big smile ! It's also well located since it's approx 10 minutes by train to Shinjuku station, and the neighborhood is really cool (a paradise for thrift shops' lovers). I recommand this place at 100% !