This is a lovely location in Old Town if you are young, into the late night scene, and don't mind a lot of noise, particularly in the early morning hours. The apartment, located on the 3rd floor (no lift), is beautiful, clean and centrally located to restaurants, cafes, bars, and shopping; the beds are comfortable. Parking nearby can be a bit of a challenge though.
My stay here was acceptable but would have been better if Alex or Kate had been a bit more responsive to email inquiries, insured that the coffee filters fit the machine properly, and provided some bottled water or cream for guests. I've stayed in a lot of Airbnb listings now, all of them less expensive per night, but offering more in terms of overall value and comfort because they paid a bit more attention to the details. I think with a few minor tweaks, a very small investment of time and less than 10 Euro, and this place could be amazing.