Myriam's place is amazing in every level. The flat itself is perfect: big, stylish and clean. The location cannot be better: surrounded by bar, pubs and restaurants in a very safe zone. Personally, I walked everywhere from there (museums, plaza mayor, puerta del sol, etc) and it was a very enjoyable walk through the centre of the old city. However for those not so eager to walk the Metro Station is close too.
Myriam was a great host, she even gave me some tips to enjoy Madrid.
I would highly recommend this flat and I will definitely stay there again. Thanks Myriam!!!