Nice location next to the parque del retiro, it is possible to walk to the centre of madrid without using public transport within 30 minutes. The apartment has every essential you need, just it is small, basically just the bed. This is no problem if you decide to stay there only to sleep, but I would not try to work (or cook) there. Nevertheless, the apartment is very clean, it has an AC and the communication with Alain was perfect. Check in and out went without any problems.