First of all, Doritza is a great host, very responsive even with all my little questions. She also goes out of her way to try to help/accommodate you. She gets 5 stars for that.
As for her place, it was perfect for our last night in Madrid. The space was quite small but had everything we needed. The shower enclosure was a bit challenging but we managed to squeeze inside. What's important is the heater and the hot water. She also provided for toiletries which was a plus. Important to note is that there is no elevator. You have to go up a narrow winding staircase to the 2nd floor. Glad we only had backpacks. And because her apartment is right smack in the middle of the city, less than 5 min walk to Plaza Mayor and a few more to Puerta del Sol, you can hear all the street noise and the people out partying in the wee hours of the morning. That didn't bother us though as we easily slept right back after being woken up a few times. Over all, it was a nice cozy overnight stay before flying back home.