We stayed in this apartment for 4 days over New Year with a group of 7.
What we did like:
Spacious apartment, perfect for large groups. 3 comfortable big bedrooms, 2 toilets and bathooms. Big kitchen
Central location, a 3 min walk from Stare Mesto, plenty of cafes, restaurants, shops around. Relatively quiet despite central location - the apartment is located on the 5th floor.
Quick communication with the hosts
Christmas tree in the living room

Unfortunately, the good impression was spoiled a little bit as the hosts tried to charge us for an allegedly broken kettle (we used all devices with no problem at all on the day of check-out and left everything in the same condition).