Apartment is located just minutes from where all tours meet in San Miguel market. This was quite key for us. Very nice, clean place with plenty of rooms. We didn’t see any issues with the room connected to the dining room as mentioned in another review - well covered and private.
Vlad gave us several keys for our group so that wasn’t an issue. Wifi also worked for us.
The place was very nice. You need to go up a few flights of steps or a small elevator. Its a perfect place to stay in Madrid.
Do note though that running the laundry at night is quite loud. There is a washer in the kitchen and it’s better to do when you are not sleeping. Also we dropped off our luggage at 3:30 pm which was really great and we were appreciative - though the apartment was not ready until after 6pm. Not an issue as we just went out and toured.