The place: The check-in process was seamless, even though Gonzalo was out of town for the weekend. The amenities were outstanding, especially for the value. Everything was clean, worked well, and was easy to use. The kitchen was nice and well-stocked with dishes, a coffee-maker, and everything you would need to cook (though you'd be missing out if you weren't eating out somewhere nearby every chance you got). We were at the end of a long trip, so it was handy to have the washing machine. We visited in July; the apartment's air conditioning was deeply appreciated. All in all this was a great place to come back to at the end of each day in Madrid.
The location: The location made for an awesome trip. You step out of the apartment building and you're surrounded by great places to go get tapas. The rest of La Latina has a great market, cafes, and other restaurants too. Everything is a quick walk away: Plaza Mayor, Las Letras, Sol. Even the palace was not too far. If you need to go farther away, the Metro stop is very close, maybe a block away from the apartment.
If we return to Madrid, we would definitely want to stay here again!