Staying at Yuki's was an absolute dream. It was a lovely space that easily fit our relatively large group of people. It's right next to the Shin-Okubo stop on the Yamanote, and it was always incredibly easy to get to where we needed to go. If you want to be next to all the action this is definitely the right spot for it. Surprisingly - it felt like it was nicely separated from all the late night activity that often is around Shinjuku. Definitely recommend this spot.