Booking: A breeze! Oscar and Vanessa answered all my questions promptly and thoroughly (This includes what to do while in Madrid).
Arrival: Oscar and Vanessa coordinated our arrival time and were so accommodating after an unexpected flight delay. Oscar met us at our taxi and carried our bags up to the flat. Oscar was very thorough in informing us of the details of the flat and how everything worked.
The flat:
Location: ABSOLUTELY BEST LOCATION EVER! This flat is in the center of EVERYTHING you want to see in Madrid (i.e. Plaza Mayor, The Palace, Huertas, Train Station, amazing shopping, rooftop bars, museums, Mercado de San Miguel - GO HERE, etc.) We maybe took a cab twice, everything is within a 15 minute walk. By the end of our 6 night stay we didn't even need a map.
Livability: The flat is beautifully decorated. It truly felt like a home away from home. It was definitely comforting to come back to such a nice place! The balcony and view is so nice while sipping on coffee in the morning. We made breakfast every morning and the kitchen was stocked with all the tools you could need. The beds are memory foam and feels like you're sleeping on a cloud. Shower had 6 different settings, very modern and welcomed after long days of walking.
I could truly go in and on. If I ever come back to Madrid, this is where I'll be staying.