The flat is new, modern with all the facilities and necessary things for comfort staying and in a very good location. Best choice for 2 people. The only thing that it’s no sunlight in the flat but if you are not going to spend all day long inside, it’s not a problem. You can get to Retiro park just in 2 minutes and 15 minutes to the city center.
The owner of the flat is very responsive. If you need smth he answers quickly and tries to help with all your requests.
I would recommend the flat.
If I’m in Madrid again I know which flat to rent, even will not looking for smth else. Completely pleased with my staying there!