This is one of my most frequented onsen. The hot spring water has the same metallic smell and taste that Futaba Onsen has. Hamada is much like Futaba in many ways, but unlike it in others. Hamada has a very wide open feel for such a small sento, the same sadly cannot be said for the changing room or lobby however which is crammed in a skinny rectangular space. The owners seems to love the sento and they sell sento related phone straps and key rings in the front. Hamada is very well maintained and the owners do a lot to make sure the onsen looks good on the outside and the inside. The website claims that they only dug a well and had actual hot spring well in 2001 although the sento has been there since 1960. The jet bath and the cold water bath with its waterfall are both highly recommended as are the outdoor baths with the plants and good view of the sky.