We enjoyed our stay at this apartment, it was tucked back from the street, so the only traffic noise was from the busses. Even as a family of 5, we didn't feel cramped in the space at all! It's very clean and the check-in process was seamless. Yulia was a gracious co-host and responded quickly to communication.
It should be noted that there are stairs needed to access the apartment and there are upstairs neighbors (but we only heard a little bit of foot traffic a few times). The kitchen is a little sparsely stocked, so if you plan on doing much cooking, you'll want to plan to bring your own seasonings and plan for being efficient with your pot/pan usage ;)
As a matter of personal preference, we found the beds to be too firm for comfort all night, but there was no shortage of blankets and pillows. The towels are plush, the closets are spacious, and baseboard heating allows each room to set their own comfortable temperature.