My friend and I stayed in the apartment for a week, while we looked around for somewhere to live permanently while studying for a master's. The location couldn´t have been better, less than a block away from Callao metro station, and a very short walk from Puerta del Sol, where we got the train straight to the university. It´s also surrounded by restaurants and close to all kinds of shops, including the department store El Corte Inglés, just around the corner.
Though we didn´t have an oven, and the kitchen wasn´t as equipped as we´d hoped (there was no toaster, kettle or chopping board), we managed very well with what was provided.
Both the bed and the sofa bed were very comfortable, and there were plenty of sheets and duvets to keep cozy and warm.
The apartment was extremely comfortable, very clean and modern feeling, and the hosts made sure we felt welcome and looked after. We got an early check-in, and Raúl very patiently waited for us outside the building when we arrived, even though we took longer than expected to get there from the airport. He was also very quick to answer any questions we had during our stay and checked in on us to make sure we were doing well.
I would definitely suggest it to anyone traveling!