We were received by Matilde, Tiffy's mother. She gave us the key and explained everything important. Besides, she gave her contact to anything we could need.
The apartment was clean and organised when we arrived. The building is very good located, near the main sightseeings of Recoleta, a very charming and practical neighbourhood.
One good thing is that it's warm inside when the wheater is cold, and very pleasant when it's warm outside.
Tiffy was very friendly and helped us with touristic info. She was helpful when we led her some problems in the apartment: a leak in the drain and some cockroachs (both seemed to be temporarial problems of the building).

The trip was worth it.