We had a very good stay at Igor’s place. It was clean, had everything we needed and actually quite spacious for an apartment in central Madrid.
Igor was very responsive and helpful and the location is excellent with all of central Madrid’s sites in walking distance.
To get a perfect score some of the furniture would need updating a bit and it could do with more natural light - though that difficult in the centre of town.
Overall I would definitely recommend it and it comes at a very fair price.