Turns out that sometimes some issues might occur, even in high-rated apartments.
For example in my case, I waited for more than 1 hour outside of the apartment waiting for the cleaning services to reach and give me the keys. And then had to wait more time for the apartment to be cleaned. Then I had problems with opening the building's door. However, I must acknowledge that host was always available, willing to resolve any issue.
The apartment was clean, well decorated & equipped and comfortable for one traveler or couple. About 20min walking from the center.