My wife and I traveled to Arco in June 2017 for the second part of our 15-day honeymoon. Our main interest in Arco was the abundance of rock climbing crags within a 10-mile radius. Surprisingly, we found Arco offered much more than just climbing. To our luck, Maria and Gigi's place was conveniently located close to several rock climbing crags, as well as the popular city center with many shops and restaurants.
Our apartment was located on the third floor. It was arranged similarly to a studio apartment with the bedroom exposed to the rest of the living area. This was not an issue for us since we were not traveling with our kids. The bathroom is larger than most bathrooms in Europe and the shower is over twice the size of the showers at the five other hotels/B&Bs we stayed at while in Italy. Below are the pros and con we noted during our stay:
Pros: amazingly gracious hosts, very clean apartment, great location, private parking, washing machine, huge closets
The only con that I can think of is that the bed is very firm. This was an issue only for my wife since I can sleep almost anywhere.
I recommend the Casa Donegani without hesitation!