Very very well located! You can't go wrong. You have probably seen many other properties and this one has one of the best values for money.
You will be close to all of Madrid's tourist attractions, all reachable by walking distance. There's also "La Latina" subway station a few blocks away. The street has many typical tapas restaurants with good prices and real Madrid cuisine. There are also several supermarkets and pharmacies nearby.
The host Jesus is fantastically welcoming and responsive, which is important to consider in Madrid as a lot of apartments are run by real estate agencies who aren't always there when you need them!
The apartment is functional with two bedrooms each with air conditioning. Everything is clean and the beds are comfortable. Wifi works well and there is an elevator. The center of Madrid is always a bit noisy wherever you are and that is part of Spanish life.
On Sunday morning enjoy one of the largest markets in Madrid just down from your home!