Belén is a sweet host, great to talk to and easy to become friends with! She is very interested in the cultural life in Madrid and if you need hints, she'll surely have great ones!
The apartment is very well located, super close to the museums and right next door to Huertas, the lively bohemian area, great to stop by for a glass before heading home.
The room is also great and private.
The neighborhood is safe, perfect for walking and there are lots of tube (metro) stations around.
I strongly recommend for young travelers and couples! Just be economic on luggage! There are 4 floors to rise on stairs! ;)
I super enjoyed!