The apartment had a nice location in Madrid. Nice bars, restaurants and shops are close. Marina responses to messages very quickly. For us the downside was that the apartment is very dark and has almost no daylight, this was something we missed here, and we did not find the bed very comfortable. They were also painting and working at the building where de apartment was located, what gave a lot of dust in the apartment and some noice in the morning. But it looked like they were almost finished with working!
Overall the apartment is good and you have everything for a nice holiday in Madrid.