The apartment has the best views of the city. Has everything you would need for a stay (including travel adaptor!). 10 minutes to 2 metro stations (and a good supermarket). Avoid the nearest supermarket as the queues can be horrendous. It is very clean and plenty of space. The sofas were very comfortable. The decor is really nice. Manuel was a great host - good introductions, very very fast responses.
As a couple of other reviewers have mentioned, if you are a light sleeper you may have issues. It is on a main 4 lane road and you can hear the street sellers and cars. But please, don't let that put you off - the place is wonderful - as was the host.