Andres's place is in a great location, across the road from the Botanical Gardens and a 5 minute walk from Atocha station. We were greeted at the apartment and shown all the features.
The main living area of the apartment has lovely decor though it is a bit tired in places. We visited in August and the apartment was hot but there were lots of portable fans to help with the heat.
Despite being in the centre of Madrid we had no issues with noise from traffic.
In summary, a great place to stay in central Madrid.