Well positioned near the Opera, and within 200m of a Metro station. Lift to the 4th floor where the apartment is, so no carrying cases up and down stairs. Plenty of facilities in the apartment, which is comfortable and spacious.
In the immediate local area, there is a great bar and tapas restaurant downstairs, with very hospitable staff. There's a small supermarket around the corner for daily or larger shopping, so everything is very convenient. Just a little further afield (another 200m!) there are loads of excellent restaurants and bars.
Travelling to Madrid's sights from the apartment is very easy. The museums and galleries were easily reached either on foot (The Royal Palace, 5 minutes walk), or on the Metro (Prado etc.).
Checking in and out was simple, with the agent managing the apartment being there to greet us and let us in. Leaving the apartment just meant us leaving the keys for the agent and posting them a note to let them know we were going.
The area around where the apartment is located is generally pretty quiet, given its proximity to the lively restaurant and bar scene nearby.
We enjoyed being there, and the quality of the apartment allowed us to enjoy Madrid and its facilities more. Many thanks.