As for the flat, it is exactly as advertised: clean, comfortable, quiet, updated, and well located. The flat was very enjoyable and one of the nicer Airbnb's I have been in, especially for the price. If you are staying with somebody and not sharing a bed, there is a great sized couch bed.
As for the hosts, we primarily interacted with Tom. He was outside and on time for check in, friendly, and made me feel quickly at home. He was very hospitable, going as far as to show me around some parts of the city. My friend was arriving later that night so check-in was just between Tom and I. During our stay he was staying in the flat next door. This was the first time I've been in an Airbnb where the host was so accessible. He did well to respect our space and we would occasionally see him, with his fiancé Zuzana on the shared terrace. Both of them are very friendly and allowed us space, but proper hospitality, to enjoy our trip in Prague.