The apartment is in a super central location, perfect if you are travelling for tourism and want to see the city. The apartment is very close to the Opera tube station. Because of its location the area gets crowded at night so if you need an Uber you will need to walk a few blocks.
The apartment is stylishly decorated and we had no issues with the appliances or the bathrooms. The Wi-Fi connection was fast and there is a big TV in the living room.
Despite being super central we found the apartment to be quiet at night, while during the day you could hear some street noise.
The only negative was the fact that the management company was a bit slow to respond, although that might have been because of the Christmas holidays.
Overall I highly recommend this place as both the quality and value for money are above average for Madrid.