We stayed at Glou for 4 nights on our first trip to Japan and were happy! The room is quite small but that’s Japan - you’re paying for good location and shouldn’t be spending time there anyway. We were basically only in our room from around midnight to 8am daily. Be aware that Glou is closer to Higashi-Shinjuku station than Shinjuku and will require a 15-20m walk north from Shinjuku station. The room itself was very small but very clean and had everything we needed. Would recommend! Shinjuku area is probably the best part of Tokyo to stay in if you’re young and active.