I stayed at Nuria's place with my sister and adult niece for 3 weeks during Christmas. We enjoyed our stay very much and felt very comfortable in it. Communication with her, since we rented it, until the day we left was excellent. She responds very quickly to anything you ask or need. Calls you to find out if everything is ok. The apartment is exactly as in photos. Very clean and quiet. She provided everything you needed in the kitchen as well as in the bathroom for the 3 weeks (coffee, tea, sugar, salt, dishwashing liquid, shampoo, bath gel, etc). The heating system works very well and you can control it yourself.
Its a 5 minute walk to Gran Via. Has a Dia Supermarket 20 steps from front door which opens until 12 midnight-very convenient and lots of restaurants around.
Building has a small elevator. Wifi worked well during our stay. The 3 of us connected at the same time without any problem.
Would recommend it to anyone. Would stay again.