The place itself was incredible. Great sized space, very clean, air conditioner worked great and the location couldn't have been better. Literally walking distance to everything, scooters and bikes right outside, and it was lively without being too loud. The terrace was a huge bonus, we used it daily and it was something unique that not many other airbnbs offered in the area. The shower worked great and the spa was excellent.
This is easily a 5 star accommodation. However, my main feedback would be that the blankets on the bed didn't actually fit the size of the bed and for 2 people sharing someone ended up cold in the middle of the night. But the silk pillow case was a great touch. Also, there was no toilet paper upon arrival, luckily there is a convenient store across the street so it was a quick fix until we could go grocery shopping (3 min walk away). And the key to the front door sticks every time (we stayed for 1 month and slowly got better at it). Once you find the correct key be gentle with it and slightly pull thebkey back out as you twist. It's an art form really.
It was a great stay and if we come back to Madrid we would certainly stay again.