The flat is located in a great spot in Madrid, the Gran Via. Everything is central and nearby. The flat is high enough that the traffic is not an issue for sleeping. The flat is best suited for one or two sleeping, it is quite small but good value considering the location, perfect for a one night stay.
The check in was very easy using the code and the key was inside and everything was clean and ready. Communication via the app was not the most effective but apart from that i would recommend it as a good place to spend a night.