We spent a great week in Prage staying in this apartment. The key safe was great as we were travelling as a party of 6 and we could come and go easily without having to stay together.
The apartment was very clean and the beds are comfortable and there are lovely big windows. The apartment is in a great location and is a 15 minute walk to Wenceslas square and is close to a tram stop if you don't want to walk far. Prague also has Lime scooters which we used a couple of times and you can leave them outside the apartment. The old town was a 20-25 minute walk. There's a Lidl within walking distance for essentials and if you plan to eat in. Only improvement to the apartment would be a small desk, stool and mirror in each room to save having to all use the long one in the hallway.