Positive: Location, proximity to the metro and public transport, apartment surface.
Negative: difficulties to check-in after 18, need to inform in advance but one day before it is not enough. The bathroom was not very clean, the dirt was probably from previous guests. The heating system is a nightmare, it's impossible to reach a normal temperature inside the house. Even though the temperature is set, the heating systems turns off automatically after 5 mins (cannot blame guests for a system that doesn't work saying guests are not able to use a thermostat. Try it to believe). When it works is EXTREMELY noisy (impossible to sleep)! During night it was freezing, the owner said that heating system doesn't work from 23 to 07. The bath tub was not like in the pictures, no hydromassage.