We stayed here at the beginning of June (2 adults with 1 toddler) and this apartment was absolutely perfect for us. It is conveniently located in town, on a side street off the main street, so the bedrooms are absolutely quiet. There is lots of space for a family -- 2 bedrooms, a spacious and comfortable living room, and a big, well-stocked kitchen. Everything was brand new, modern, and comfortable. (The pictures are 100% accurate in this regard.) It was almost like being at home, just in a better location! (The only possible issue for a family: there is no yard or grassy enclosure at the apartment where kids can run around. But personally, I think that's what the surrounding area is for...)
Mr. Aissa was also very kind in preparing for our arrival. He ordered a high chair for our son, as well as cute children's plates and utensils. When the weather forecast was bad, he even hung up a swing under the overhang outside, so our son could still play.
As for location: we love Kandern. It is a charming little town in the southern Black Forest with a nice stream running through the middle (the apartment is nearby). In summer it's a great starting point for bicycle rides, hikes, and other outdoor activities. On top of that, there are a lot of amazing restaurants in the area. One of our favorite discoveries was zum fröhlichen Landmann, which is only a short drive away (~10 km or so). It not only has very good food, but a super playground as well. Kandern also boasts a very nice public swimming pool.
In short, we had a perfect holiday here and would definitely come back again!