Carla's place is a true gem in the heart of Cascais and had everything I wanted from an AirBnb. It's beautifully decorated, located close to some of the town's best restaurants, and it's 60 seconds from the town square and main beach. The main bedroom is ample, with a lovely en-suite and very comfortable bed. There's also a smaller room downstairs (which I made use of) with another en-suite and a sofa bed.
My best friend and I stayed there before Ironman Portugal and we would 100% stay again, whether that was for relaxing or partaking in another event.
Carla herself is a brilliant host - very considerate and easy to contact (she even allowed me to park my car near her place so I could save on parking costs). She will go out of her way to make sure you have an enjoyable stay in Cascais.
Overall, I would give this place 5 stars. Highly recommended.