I've rented Katerina's apartment for my parents and they were truly impressed by it. It is a very spacious, clean, modern and fully-fitted place with a stunning view on Prague from the balcony. On top of this, Katerina herself is very nice and accommodating, and doesn't hesitate to go extra mile (e.g. suggested my parents could check out after the official check out time as she didn't have any guests coming in on the day of their departure)