We really enjoyed staying at Carlos' place. We've been traveling around Spain for about a month and it's one of our favorite places so far.
There are 3 bedrooms that are quite spacious and comfy. It's a walk-up apartment but we did it several times a day with toddlers and no issues. When we arrived & left, we parked our car out front (it's on a quiet side street) so we could un/load the car easily. Carlos gave us detailed information where to park for our stay so we did that.
He provided us with a bottle of wine, chips & cookies, all of which we ate while there, along with plenty of bottled water. There was a highchair and pack 'n play when we were there - we didn't ask for them but we did use the highchair since we hadn't brought any.
The walls are thin and there's also these windows out the master bathroom & kitchen that face into an air vent of sorts, so you can see the apartment below's plants & clothes drying and if they have windows open as well, their TV and such.