This is the place to stay in Madrid if you like happening places.
Pro's
1. Nice and trendy place. The house is very well maintained.
2. In the middle of a most busy street of madrid.
3. Lots of attractions of madrid are walkable distance.
4. Easy to reach from Airport. Take a renfe train(not metro) from airport to Sol.
5. Host is super awesome very warm and helpful.
6. All the amenities as given in description.
Cons
None I can think of