Perfectly located. The Retiro Park and the Cuatro Towers are less than an hour away by foot, Santiago Bernabeu, Chueca and Malasaña less than half an hour. And within a 1-15 minutes walk there is a multitud of restaurants to choose from. Everything from pizzas and hamburgers to traditional local food and even fine dining with Michelin recommendations. And on the same street there are three supermarkets (Opencor, Dia and BM), bakeries, fruit shops and 15 minutes away is a huge El Corte Inglés. And if you prefer public transportation to walking, there are metro stations for just about all the lines very close by.
The apartment itself is interior, with windows to small closed yards of maybe 10 square meters, but the lightning has been organised so that the apartment feels really well illuminated.
There are basically four rooms, a kitchen and a bathroom, plenty for two, but since the rooms are quite small, maybe not for more people.
The Internet connections worked perfectly for remote meetings and watching streaming services.
The only negative might be the elderly couple living next door, who were often watching TV very loud and arguing even louder. So, if you plan to spend time inside during noon, afternoon and early evening, that might be a disturbance. But the nights and the mornings are very quiet, so it was easy to get a very good sleep.
I can fully recommend the apartment and Suso was a perfect host.