Carlos is a very nice, easygoing host which is easy to reach if you need anything.
The apartment is really good located. You have everything you need for a nice stay. Although the apartment is in a very quiet spot you can hear the front door every time when a neighbor enters because it was impossible to close it quietly. And you can hear every step the neighbors make at staircase as well as above you. All in all it is a very nice old town flat where you can easily reach most sights by foot. I would stay there again.