Our experience was first class. Oscar met us at the apartment at a time inconvenient to him but he made it work. He briefed us thoroughly on the apartment and use of the appliances, and has a large map of the area with many very good recommendations of places to eat, drink, visit, shop etc. We used it extensively and all the recommendations were excellent.
The location is ideal, and we walked to most places, only used the metro twice ( but it is very user friendly).
We'd return in a minute and hope to soon.
One caution. If you leave the apartment doors to the french balcony open at night, it is quite noisy. However, if you close them and use the air conditioning, it is quite quiet.
Overall a graat place and experience.