We - 3 friends from Germany and Mexico - had a great stay at Ráuls place! The flat is super central and a friend of Rául already waited at the flat to give us the keys. We first planned to arrive with 5 people (since the flat is for 6) but two of our friends couldn't make it in the end, which wasn't so bad cause the flat is a bit small for 5 or 6 if you also wanna have some privacy. We would really recommend it tho if u re looking for a pretty place in the center of Madrid and don't mind spending the days very close to ur travel partners. :)