I spent 2 months at Leo & Javi's place and it was the best 2 months of travel ever! This is the ONLY place to stay if you are thinking of coming to Madrid.
To begin with the location is ideal, in walking distance from all the shops and the centre of Madrid like Sol & Gran Via, but it is not so close that you are in what I would call a "touristy" area, ie. no tourist trap shops or restaurants selling overpriced things.
It is also only a couple minutes walk away from 2 metro line stations. A large Carrefour Supermarket, Zara, Sephora and several other chain stores are all within 3 minutes from the apartment plus many convenience/ corner stores which stay open all night long.
On to the house. It is exactly as described and kept exactly as you see in the pictures EVERY DAY! Javi & Leo clean the house daily, there is never a spec of dust or item of furniture out of place.
The room itself comes with a comfortable double bed, desk, large wardrobe and a window that lets in natural light. The room is quiet and nicely located away from the host's room and living room so if you want privacy you can have it but if you prefer to interact with the hosts you can join them in the spacious living room where there is a large TV available for you to use. They also have fast wifi service which you can also use.
A large bathroom with tub/ shower is always kept pristine clean for your use and you have full access to the kitchen including the washing machine.
Now on to the best part - the hosts! Leo & Javi are by far the most genuinely kind people you will come across. Their hospitality is unlike any service you could get at even the best 5 star hotel. If you want to be left alone they will let you be, but if you want to join in they will take you in as part of the family - literally! I often ate many of their home cooked meals with them, socialised with them and they even introduced me to many of their friends and family that we hung out with often. And this was not a one off, many of their friends that I met were their past Airbnb guests, they truly will take you in and ensure you not only enjoy your stay at their house but in Madrid as well. They also gave me heaps of suggestions of things to do in Madrid.
I could go on forever with reasons as to why you should stay at their place, so if you are coming to Madrid this is the only place you should consider, you won't regret it!!