Biggest pros: amazing location and access to Queen Street Gardens.
Other pros: quiet, warm, easy check-in and out, good communication, lovely big bedroom with shutters, large living area, building felt safe.
Cons: dishes and cutlery weren't very clean and required quite a lot of scrubbing, narrow bathroom (probably wouldn't have been an issue if we didn't have a baby), the whole floor was on a slope and creaky - quirks of old Edinburgh buildings, the back of the sofa is only half height so not particularly comfy.
Haven't stayed in another Edinburgh Airbnb so can't compare but it felt expensive for the quality, but made up for it with the great location.