The apartment seems to be newly renovated and the pictures are very accurate. It is a clean home and a great choice and value for the price! It offers everything you'd need and the host is quick to respond and very friendly and helpful. The location is quite good and there are many restaurants and supermarkets around. Taxis are relatively cheap so you can easily take a taxi to the city center.
All in all I'd definitely recommend it!
PS: you do not necessarily need to install the app to open the door. You can contact the host to open it the first time and after that you have to always enter the code for the apartment entry and you'd have a key for the building entry.