My mum and I loved our stay in Madrid. The apartment was perfect. Great location that felt very hip, lots of young people, quite a 'local' atmosphere. Very close (all within walking distance) to Plazza Mayor, The Palace, Cathedral, Prado Museum, Rheina Sofia Art Gallery....
The apartment was quiet , we heard no nosie from outside or the stairwell.
Excellently furnished, very modern, loved the Nespresso machine, very comfortable.
I will be recommending this to friends and family.