I spent one week at Sonia's as a solo traveller visiting and studying in Madrid.
Sonia was an awesome host and super helpful. There is nothing she doesn't know about Madrid and the fact that she also teaches Spanish was a bonus for me.
The apartment is as described and met all my needs. For sure the highlight of the apartment is the location - superb. And when she explains the front door works..Listen!!!
I look forward to seeing Sonia again, for sure would stay there again...If you'll have me - haha.