Excellent! Gorgeous flat, perfectly clean. I felt like I was the first person to have ever stayed there! The host was really efficient and friendly, responding to messages promptly. The flat is in a perfect location in the centre of Madrid with great transport links. The bed was super comfortable, my only slight negative would be that being an exterior flat there was some from the road, especially early morning which disturbed my sleep. Everything else was perfect or better and I would highly recommend staying here!