We stayed one week in the appartment. Initially, Vadim told us that the flat will be number 312, so we entered at the defined time, however the flat was very strange, as it was cold and the appartment was little bit messy. During at least 1 hour we weren't able to join Vadim. Finally we could contact the mobile number indicated in the appartment, the number of his wife, who gave us the contacts of Vadim. He told us that the right appartment is 311...
The appartment was clean and the emplacement is perfect, however it was very difficult to join Vadim, neither by mobile phone nor by AirBnB.