This is a great apt. Very clean and it feels bigger than it is thanks to the mirrors. The bed is comfortable, and the little kitchen is great for espresso in the morning and making little sandwiches. The washing machine is a nice little bonus if you have some clothes to clean on your visit.
The bathroom is spacious, and the shower head is great.
AC is great in super hot Madrid.
Close to the gay nightlife, if that's what your looking for ( I was), but Madrid is pretty compact In terms of touristy stuff, so it's fairly easy to get everywhere.
Overall a great place. I would highly recommend.