This is a fantastically central location for exploring Madrid, and one of the best Airbnb experiences I’ve ever had. I would not hesitate to stay here again, and would recommend it to others without hesitation. The air conditioning is fantastic, the dishwasher and washing machine are very helpful, there are grocery stores all around, and the metro is maybe a one minute walk away. The Prado and Thyssen and Plaza Mayor are all very easily walkable, and are bars and restaurants all around. The kitchen is stocked with espresso, and the bathroom has body wash, shampoo, etc. You really only have to show up and buy some groceries. Susana is very helpful and a very gracious host.
I know some reviews have mentioned the stairs as a downside, but honestly, unless there is a health concern/accessibility concern, it’s not a big deal at all. I never even thought twice about it.