Hachimanyu

A great sento, clean and well maintained. No sauna, but the warm bath was great, there are "personal" pools where you could stretch out comfortably. Easily accessible from Shibuya or Harajuku, just take the subway to Yoyogi-Koen station, go out of exit #1 and it's the first alley to the right. Closed on Friday and no English sign. Many small local restaurants and bars around. Highly recommended!