We stayed here for a month and this apartment had everything we needed!
It was also close to many grocery stores, restaurants, metro stations, and sights around Madrid, so traveling around the city and Spain was super easy. It was a couple streets away from any plaza or restaurant, so we could sleep peacefully at night.
Iwona is amazing at communicating and is very helpful. Her neighbors are quiet and respectful as well!
Note about the AC: It takes a full day to cool down the apartment in July/August. Turn the AC on as soon as you arrive at the apartment and spend the rest of the day out exploring the city.
Other than that, this is a great AirB&B and I think the price reflects the value accurately! I would stay here again!