We had a great stay in Carlos and Petra's apartment. They were there at night to welcome us and hand us the keys. They are very friendly people and showed us some places of interest in the city on the map and answered all our questions. There even was a bottle of wine and fresh fruit for us!
The apartment is very comfortable and new. Everything you might need in the bathroom and kitchen etc. is there. The location is perfect near the central market and everyting in the old city is reachable by foot.