The flat is comfortable, very spacious, clean and has everything you might need, and includes air-conditioning which is helpful when temperatures are well over 30C. Mar was very friendly and helpful on arrival and her communications were excellent.
The flat is located on the second floor of an old building with traditional Spanish apartment character, but as you might expect the floors creak and the windows are not well insulated, although is is on a street without much traffic.
The building includes several apartments over four floors, and many of the residents of the other apartments in the building are students and their friends of student age.
The location is extremely convenient both for walking access to central areas (Sol, Gran Via) as well as to Retiro and Atocha. There are also a good selection of bars and restaurants nearby (e.g. Calle de Jesus, Calle de las Huertas and Plaza de Sta Ana which is not far)