The location of the apartment is very convenient although the few surrounding blocks do not look perfectly clean and safe. The main problem with the apartment for me was the noise from metro trains which were running right under the house and it cost me a lot to get used to it.
Also, it was pretty cold in the apartment as the radiators were not functioning.
But Cristian the owner communicated with me very well about this things and offered me a little refund for the cold in the apartment.