A little hidden gem in Madrid. Easy to get to and amazing room with a strong Spanish vibe. The balcony is just wow as it's really spacious and you can see the entire city. The host is really warm and friendly and taught me a few words. They provided breakfast as well.
The door has a lock as well as the bathroom so felt safe from the beginning to the end.
Transport wise, you need to use the metro to get to the center but the station is 3 min away and is on the line which gets you in 10-15 min to almost all important landmarks. I was only interested in one night as I was moving between trips but was truly impressed with the quality of the room.