We stayed at Miguel's place for a week.
Pros:
The location is amazing! Close to 2 metro stations, 5 minutes from the Gran Via, tons of restaurants and bars, a grocery store at the corner.
We all slept very well. The beds were very comfortable and the apartment is huge. Ideal for big groups because the living room/dining room is big! Plenty of couches to sit on and relax.
The management was very responsive. The girl who checked us in was nice and explained things about the apartment. We had a problem with the Nespresso machine and contacted her on Sunday morning. In the end it was user error and she told us what the problem was. p.s. if you think of bringing your own moka, think again. it's an induction stove so it wouldn't recognize the moka and turn off(Italians love their coffee:D).
The cons:
There was a big water damage on the living room wall. I'm surprised it wasn't even sanded while you(maybe?) wait to get it fixed. The finishes of the main shower were old and the silicone was falling apart. These are easy things to fix and would expect to be replaced at this price point.
The bathroom closest to the kitchen gets really stinky during the day. I know this was mentioned in other reviews but thought it would be fixed by now. it's not pleasant when the apt stinks of sewage while you are having breakfast.
The blankets were dirty/stained. Again, something easy to fix that ruins the experience.
Finally, every time we tried to use the toaster it would shut off the electrical system, so in the end we just gave up and didn't use it. The first time it happened I contacted the management because we couldn't find the panel to switch it back on. The girl was again very responsive and told us where to find the key to access the panel(which is in a closet next to the entrance that is locked).
Overall, we had a good time and, if they fix the above issues, it will be a five star place.