We had a really great stay at this flat ! Very clean, cosy and well located : close to the supermarket, 14min away from the subway station, 20/30min from the Centro and the principal areas to visit. Honestly we didn’t really use public transportation while we were there since everything is pretty much accessible by feet.
The only "issue" would be the lack of necessary cleaning equipment (broom, sponges, washing up liquid) especially for washing the dishes. But i think they just forgot to leave it since the flat is new on airbnb.
Overall, we’ll recommend this place to anyone who needs somewhere to stay in Madrid !