I highly recommend Arvin’s place. The location is great, only a 3-5 minute walk to the Palace and very close to the shopping area (Gran Via). Arvin is a great host, really great communication and the room had a TV and really good air conditioning. He asked for my passport information in case he needed to provide the information to authorities, something I think travellers should just be aware of. Seems to be a common thing for hosts to do in Spain. I would 100% stay there again, had a lovely time.