Karolina is great and hospitable: she agreed to meet us at 11 pm on December 31!
The flat is excellent; there’s everything needed if you want not only to spend nights but also actually live: fridge, stove, kettle, oven, dishwasher, pots and pans, lots of lovely plates and cups, etc.
The flat itself is situated veeery close to the subway station and is only several stations away from the city center (one doesn’t even have to change the subway line).
Me and my boyfriend, I highly recommend staying at Karolina’s apartment.