My girlfriend and I stayed in Takayama for 3 nights, and we really enjoyed this place.
The owners are a quiet but friendly Japanese couple who don't speak a ton of English, but it wasn't really a problem at all.
The location is nice, just on the fringes of the old city, about a 5 min bike ride or 15 min walk to the main center of town. They have tons of bikes for guests to use, and it's a really beautiful little town to bike through.
The onsen was a nice bonus, and it was always kept very clean. Just note that they are gender separated, and like a traditional Japanese onsen you bathe naked. There's a nice guide on the wall of the change room that shows you everything you need to know about proper onsen etiquette.
Overall we'd recommend this place to anyone looking for the Ryokan experience in Takayama.