Had a great stay at Al Di La Yotsuya! It was just what i needed. Location was immediately close to a station. I loved that the place had code entries so i couldn't lose a key. Check in was so easy with the ipad system and I'm glad i could arrive at any time after check in starts. The room was just like the pictures. Small of course since it's in Tokyo but with the hallway/laundry/kitchen it was more spacious than hotel rooms I've been in in Tokyo. Everything i needed was provided and everything was clean. One of the reasons I chose this listing was because it had a washing machine- and the shower room has a drying feature, you just hang your clothes in there after you spin dry.
Oslo coffee shop was great and I loved the warm retro vibe of Maruhashi Coffee nearby.
Got bentos from Tonkatsu Saboten often.
Recommend a walk to Suga Shrine and continue south along the parks towards National Art Center.
You can definitely walk to Shinjuku!