We rented a two bedroom, two bath suite here. The place seems to be brand new and very stylish. Everything is clean and comfortable and includes everything you need. Kitchen is fully equipped. No staff on site, but they promptly meet you for check in. Everything was easy. This is our third place we've stayed in Spain (with other two being Airbnbs) and this is by far our favorite.
We highly recommend this as a very comfortable place to stay. It felt very safe and was close to everything. There is amazing shopping at the end of the block. It's like living in a US mall. We've easily walked everywhere we've wanted to go in Central Madrid.
Other reviews may mention graffiti on the door. That should not detour you. Everything in Madrid has graffiti on it, even the nicest stores. The graffiti seems to have no bearing on the safety of the neighborhood and is just an unfortunate reality of Madrid. You can see they have painted and the graffiti just comes back.