Good place if your a couple, not so much if you are pair as the pull out bed wasn't so great. Using travel adapters made plugging in stuff awkward as we had to unplug Wi-Fi as the lack of sockets.
The basics as you would expect in an Japanese apartment in Tokyo so prepare for the basics.
The staff are very friendly and helpful made the experience a lot better.
Overall not bad for right in the middle of Shinjuku.