Very nicely decorated studio apartment in an excellent location, <2 minutes from Chueca metro, 5 minutes from Gran Vía. Limited space but with the bed folding away and the galley-kitchen there is enough to have a day living space. It's plenty big enough for 1 or 2 people to use as a base.
Arrival and resolution of any issues is done through MintyStay who are a professional management company and were very responsive to any queries or any requests. E.g., I messages and asked if there was an ironing board and noted a couple of very minor defects (without even needing them to be fixed) as I was going out for an evening, and they came to drop off an an ironing board and fixed the minor problems within a couple of hours.
The kitchen has a medium fridge with freezer compartment, 2 ring hob, microwave and toaster.
There was a washing machine, air conditioning and provided shampoo, despite what the ad says, so those were nice bonuses...