We stayed at Paula's place for 3.5 days. The location as well as the apartment were fabulous.
Apartment: Sufficient air conditioning to make the heat bearable; two very comfortable bedrooms; well equipped kitchen; spacious living and dining area; and 3 beautiful window balconies to keep the activity coming in. It was unfortunate that there was some construction work going on, but it didn't bother us much.
Location: Very central, and eclectic place. A lot of South Asian restaurants in the immediate vicinity, which seemed to be very favored by the locals. There's the Anton Martin market and a varied selection of restaurants and bars nearby. For a walker, the place is especially great, as I walked nearly everywhere including the Prado, Gran Via, Plaza Espana, Plaza Mayor, the river, Parque Rio.
Thanks Paula, for a wonderful stay!