Musashi Koyama Onsen Shimizu Yu

Looks nice from the outside & modern, but not so nice once you're inside the baths. Some of the shower heads on the bathing stations are loose so the water can't be aimed towards you and essentially unusable. Even the shower heads that are usable would lose its angle and droop so you have to adjust it all the time. Some of the push faucets are cracked so the water leaks out all the time. The water temperature also fluctuates from lukewarm to very warm. It was very crowded when I went on a Saturday night. The baths are not very big and there was barely any space to enter. Only 3 hair dryers that are free of charge and during my time there, there was a group of 3 young women who occupied them and the space in front of the mirror for a long time. The changing area feels really small, only 1 tiny bench in the middle. One of the outdoor baths (the black one) is supposedly natural hot spring water. The other one is yellow in color and is salty, supposedly good for your health. No shampoo or soap so bring your own. Bring some 100 yen coins because the shoe locker and the locker inside require 100 yen deposit to be locked. Sauna is additional charge.

This is the 5th time I have gone here and I love going to Musashi Koyama Onsen bec the place is so clean, the staff is helpful and polite, warm and welcoming. I love that they welcome me even if I have tattoos and speak broken Japanese. Each time I come here I am renewed and refreshed. The facilities are complete. I like the massage chairs, the foot massage machine (you need to pay a minimal amount). I like that there is a space where I can nap or meditate, have some quiet. The vendo machines are complete and choices great. The water relaxes and soothes me. I love getting a glimpse of Japanese culture in something that I’ve grown to appreciate: the public baths. They teach me so much about a people I have come to love and admire. Arigato gozaimasu, Musashi Koyama Onsen.

I was very excited to go here due to all the other good reviews. However, when I went, the facilities were so dirty I could not enjoy myself, and I found myself very conscious of the dirt everywhere. There was intense mold on the stone foot mat so much that I couldn't use it, a used bandaid near the onsen, and there were so many people using the baths that the water became quite dirty. I became very uncomfortable sitting in the water and left early. I love onsen, but unfortunately, I wasn't able to relax here.

Decent public onsen, with nice facilities and friendly staff, who have an English “cheat sheet” to help explain FAQs! Went on a Sunday afternoon and it was pretty crowded, with ~30 people in the men’s onsen. Hot bath was great, wasn’t feeling the need for a cold bath, so avoided that! Nice semi-outdoor area and bath too. Simple facilities, no photos of the baths themselves for obvious reasons (and probably not what the Google Maps community wants to see during dinner time).

One of my favorite onsens bec it is simple but complete. Apart from the onsen, there is a sauna, a lounge with massage chairs (100 yen for 10 min if I remember right), a foot massager. And you can nap, read your book or have your quiet time in a tatami mat area. The staff members are friendly and helpful. The drinks are complete. I go here regularly and would recommend this to everyone.