This is an interesting space in a perfect location - most of Prague is accessible by foot or by a quick tram ride, and restaurants and shops are just around the corner. Communication was excellent with Peter and Jack, even when we had an issue with the washing machine; thank you! Check in and check out were super smooth, and we were even able to stay a couple extra hours in the space to accommodate our later flights.
We'd be more likely to return to this space in cooler months, since being an attic apartment it does heat up quite a bit, but there was a fan in the space and opening the windows at night made things quite bearable.
Unfortunately, what keeps us from leaving five stars is the cleanliness of the space. When we were there the apartment was quite dusty, and looked like it hadn't been given a deep clean in a while - cobwebs in the corners, kitchen equipment and floors covered with a layer of dust (and scattered crumbs, in the case of the kitchen), a very thick layer of dust under the bed (as I found out when I wanted to store my suitcase under there and pulled it out completely covered). This doesn't seem to be an issue for other reviewers, so hopefully our experience was an isolated one - but perhaps something to keep in mind, especially if you are sensitive to dust.