I spent my last night in Spain at Karmen's place. I found it to be exactly as described, and very clean (including the sheets). A really cute little spot, and perfect for a solo traveler.
I was pleased to find that the apartment was on the first floor - a huge relief after buying too much wine in Rioja and lugging it around for the few days prior!
The location was perfect for getting to and from the metro - just a couple short blocks from the Plaza de Espana stop. It is also a relatively close walk to restaurants and shops, though it is just off Gran Via, which is a little too touristy for me. I ended up walking further to find restaurants with a little more authenticity, quality and value.
The apartment is on a small side street, which I found to be a quiet respite from the hustle and bustle of the main streets just a couple blocks away.
Communication with Karmen was mostly easy, though finding the apartment and key was a little confusing at first, and I was surprised on arrival that there was no one there to meet me. Karmen was quick to respond to my questions though, and even checked on me later in the evening to make sure I was taken care of. Check out was a breeze.
I felt completely comfortable in her little spot, and thought it was a great value in one of my favorite cities.