Friendly host, appartment as shown in the pictures, great location.
Before going, I had some doubts about noise, but I can say, that the appartment, even though right on Gran Via, it was quiet.
I would normally give 5*, but I have two things to note, and that's the only reason I am not giving 5*. First, the small couches in the living room, are more decorative than anything else. They really aren't practical, and don't expect that you will sit an relax after a long day. After 10 minutes, you need to get up. Not comfortable at all...
The second note has to do with the matresses. Although, in the bedrooms, they have double beds, for some reason, they have two single matresses in each double bed. This makes sleeping a little inconvenient if you want to use the whole bed...
These are little things that would make this a 5* appartment, and everything else was great as described and as expected.