We did not meet Ines during our visit because she was out of town. Instead she had other people check us in and sign the required papers for the local authorities. They were very nice and willing to help.
The apartment is in a great location near the Puerta del Sol plaza and metro station. While this is a very lively location with lots happening in the Puerta del Sol, the apartment was quiet inside. The apartment itself is small but equipped with everything we needed, including a balcony on the roof with a great view of Madrid. The second bedroom is on the same upper level as the balcony; the stairs that go up to that level are rather steep. We were able to walk to everything we did in our short stay in Madrid - thanks Ines!