Sergei's flat is really nice and well located, close to the beach and city center. His friend Vladislava and her husband have been really nice to us, and flexible about the arrival and departure times.
The main problem is that we were excepting to get the Wifi, as specified in the advertisement, and that was not. We have been very annoyed because we really needed it, and that was one of the reasons we had choosen this flat.
Secondly, I have to say it is really hard to find a place to park the car around the accommodation, we had to turn around for about 20 min each time.
In the end, it is a quiet place to stay and there is space, but remove "Wifi" from the advertisement because it is not included and this is something people should know before.