For me and my husband it was a fantastic stay in Silvia's apartment. It is immaculately clean, beautifully decorated, fully equipped with everything one might need even for a long stay (we stayed for 14 days). Bright and light, comfortable and cozy. Everything worked perfectly. The neighborhood is packed with all kind of shops within easy reach from the apartment. Two Metro stations (line 1 directly to the center of Madrid).
We would certainly come back. And I recommend it wholeheartedly.