We stayed at this apartment for a month, and this type of apartment is good for a short stay. It's pretty dark even during the day, since it doesn't have natural light, all windows are facing the interior of the building so there's also lack of ventilation.
WiFi connection is very poor, it's available only sometimes in the hallway and maybe bedroom. Also apartment itself it's like resonant box so you can hear all neighbours.
All in all , is't very nice place but for short term stay, and if you won't spend a lot of time inside or work from home =)