We were greeted at the time we said we would arrive and shown into the apartment straight away, we were given good suggestions on things to see and do and provided with plenty of "Things to do in Madrid" leaflets to help us make our own mind and a bottle of wine and nibbles to make us feel at home. The pictures are accurate and if you are staying with a couple of friends as I was this is a great apartment. The apartment is compact but spacious enough if you are there to visit the city since you shouldn't want to spend too much time inside the apartment instead of visiting the sights. We stayed when the temperature was in the low twenties and we did not need to turn the air-con on but did keep windows open when we were in the apartment.
The apartment really is in the middle of the city, many important sights are within walking distance and if you are a walking sort of person you can cover a lot of the city on foot. Wi-Fi worked without a hitch, bathroom and kitchen too. The hosts really do make you feel at home and seemed happy to help us with any query that we had so I would definitely recommend the apartment.

Just a thing to note: If you have a disability or for any other reason may not be in a fit state to face stairs, this apartment is on the 5/6th floor without a lift, and while the stairs up are safe, they are quite the trek even if you are fit, never mind if you aren't or may have had a jug of sangria or two...