We are a group of 6. This place is in the center of Madrid. Easy to walk to major attractions and right next to the opera station, only a 1-minute walk to Airbnb. They have everything we need for the four nights and easy communications. They helped us book a taxi from the airport to Airbnb, which is very handy. The cab in Madrid has a fixed rate from/to the airport, and sometimes it's cheaper than Uber.