This is a really lovely apartment. Stylish and modern, it's kept spotlessly clean. The kitchen is very well equipped with all the little touches (like kitchen towel, washing up liquid, etc.) that you often don't find in rental properties.
The location is excellent. It's a quiet area, so I had no problems sleeping, but it's also close to two metro stations making it super easy to explore Madrid.
Alfonso and Ignacio are excellent hosts. They communicated well before the stay and were very friendly and welcoming when I arrived. They also offered lots of advice about things to do in Madrid, as well as good restaurants in the neighbourhood.