Pros:

The apartment was centrally located and very quiet. One could walk from there in about 20 minutes to most everything important in Madrid. Being on top of the building with a great terrace (nearly half the size of the apartment) afforded spectacular views as well. The unit was well-appointed with a comfortable bed and a nice bathroom. The kitchen had plenty of pots/pans/utensils to cook in.

Cons:

Our issues were mostly organizational in nature. The check in was a little hectic as the cleaning crew was still working when we arrived (730 PM) and the host did not arrive until half an hour later. Also, there was not working internet until noon our second day which made it difficult to plan/book a things. We had to meet a friend the next day and the lack of internet made it tough figure out the details.