This apartment is simply amazing!
In terms of location you couldn’t ask for better. It is extremely close to Sol, which is the busiest and most central area of Madrid and therefore you also have transport connections to basically every other part of the city as Sol station has metro lines as well as train lines.
The street in which the apartment is located has many bars and restaurants so you will never be short of options. The area is safe which is also very important to consider. Even at night time there are many people walking about this area so I felt very safe. The only negative is the street can be noisy at night time with the bars but with the current curfew due to Corona virus this generally wasn’t too much of an issue. This apartment is particularly great for long term stays as well, as it has everything you will need.
There are two balconies with views of the street which is great. There is a supermarket in the street which is also very convenient. If you are looking for somewhere central then this is the place to stay!