A great place to explore Madrid: several food shops around; 20 minutes to the centre of Madrid (Sol Metro station); comfy bed; functional kitchen and a homely apartment.
Oscar is very fast to respond to messages and was very helpful - giving me access to the apartment remotely.
I had a lot of trouble with the Nuki Security app for accessing the building/flat but Maria came round within an hour and sorted me out with some keys when it wouldn’t work. All in all, a good experience and I can recommend to anyone staying in Madrid.