I stayed at Gala‘s apartment for 4 nights and would definitely recommend it. The apartment is only 200m from Plaza Mayor and also only a few hundred meters from the Metro. Great restaurants and Tapas options are also nearby. Despite being in the centre of everything the apartment is surprisingly quiet.
The apartment itself is really clean and modern. The bathroom is a good size and the kitchen contains all the equipment you need. Gala is very proactive and responsive with sharing information. I would definitely recommend Gala‘s apartment to anyone travelling to Madrid for either a few days or a longer stay.