栄湯

Very crowded. You need to have a 100-Yen coin to use locker

Nice newer feeling sento. Clean and welcoming. Only three baths and pay extra for the sauna. Enclosed outdoor bath. On the smaller side, but still very nice.

If you know what a Japanese sento (public bath) is like: this place has a lot of nice extras for the uniform regular sento price in Tokyo. It is not crumbling old, you get free soap/shampoo, there is a scented batch with changing scents (lavender, red wine, Blue Hawaii (with a touch of menthol), just what comes to my mind), there is jet massage, there is a tiny cold bath, too, to cool down. It is loved and frequented by the locals, so it is quite crowded most of the time. There is sauna, if you want, for some extra price. If you do not know sento but want to try it, and don't want to spend a ridiculous amount of money to try, this is one of the best places 470 yen (at the time of writing this) can buy you in Tokyo. But the locals know it, too, so it's a bit crowded.

Good place if you are a tourist and want to experiment something traditional, local and low cost. People with tattoos is allowed and the facilities are clean and safe. Not bathing suit

Real hot spring (onsen) in Tokyo, at public bath house pricing. Reformed in 2014, super clean, electronic money (SUICA etc) accepted (but coin needed for locker), soap and shampoo included, and sauna and towels available (extra fee). Low ceiling, generally crowded and no Mt. Fuji esque paintings inside.