Izabella's apartment is completely charming, and just like the pictures. We were two couples there for 3 days and we loved it.
It is spacious and stylish, sparkling clean, and so centrally located. During our 3 days there, we never once needed to take a taxi or bus or metro, we always walked everywhere.
Izabella also was really kind and flexible with our check in and check out times, and she welcomed us with many great tips for what to do and see in Madrid.
Completely 100% recommend this!!