Jeny and her son are both so lovely and welcoming. They don't speak English and I don't speak Spanish so I used a translater app to communicate. But they have such a warm and welcoming energy that I felt completely at home from the moment I arrived until I left.
The mattress and the pillows are super comfortable and the shower is really great!
I used the train and metro and both are quick and cheap into the center.
I would recommend for a short stay in Madrid.