I really enjoy my time in Madrid with Carmen:)
The location is very central, in a very lively neighborhood but not noisy, also good public transport anywhere.
The apartment is nicely designed, full of characters. It also made me feel very homey.
The check-in was a little hiccup but overall Carmen was very quick with communication and a great company. Love Abba her dog and green terrace as well. We had a great bond over a few days.
I would recommend staying here if you want to feel like a local in Madrid!