We stayed in Appt. Rebecca in December 2016. The location is perfect for the Christmas period - you are in the middle of the historic city, minutes away from the concerts at Plaza de la Constitution. Restaurants everywhere, Mercado Atarazanas in front of the house door. The street Calle Sebastian Souviron is very quiet.
The apartment itself had two bedrooms and two bathrooms. A small kitchen. Appliances in very good condition. I would be very happy to come again!