Naoko was very friendly, helpful and proactive, ensuring we had all the directions we needed to find the apartment easily. Her assistant was on hand to meet us and show us how everything worked, which was also nice.
The apartment itself is a short 15 - 20 minute walk (depending on how long your legs are/leg speed) from Yoyogi Park, leading to Harajuku and Omote Sando or Shibuya in the other direction. And if you don't like walking there are plenty of bus options a short walk away.
Overall it's a great base to explore the west side of Tokyo - a very stylish studio apartment with minimal clutter that's much better value for money compared to any decent hotel in the area.