It's a really good place! My wife and I visited Ruta del Sol three times for a couple of days each, to relax from other hotels/hostels, because it's safe, very clean, calm, people are nice, breakfast is included, food is good in the restaurant, a little pool, canvas chairs, and this all is very worth the money!
The owner seems to be German, so it's even possible to call him on phone, if there is something important and talk German...
It's also a good place for the first night after arriving in Asuncion and then going further east by car, as we did...
If I ever come back to Paraguay, I'd love to go there again.
Our best wishes to this establishment Jutta & Kai Schubert