Amazing place in very central and convenient location - you can do most sights walking and have a metro station at 1 minute walking distance for the rest. Ample rooms with vintage doors and windows. The living room ceiling is just incredible. Kitchen more than well equipped for everything you may need for a city trip, and more.
Communication with Oscar was great, with some flexibility for the checkout time.
Only con depends on what you are used to - it is a busy street and one of the two bedrooms is facing it. My place back home is super quiet, but I adapted well after the first night.