This was an amazing place to stay. HOST: Carol is very nice and helpful to give you all the information you need before you arrive. We never met, but we were able to get in late in the evening and leave at our leisure due to the keypad access. She even had some snacks and tea for us there for when we arrived.
LOCATION: The location is perfect at the bottom of the Royal mile and great location to all the tourist destinations, the hop on and hop off bus stop is right outside, many amazing restaurants, bars, and places to walk.
APARTMENT: The place is very clean and spacious. We had 4 people (two couples - my parents as well as my fiance and I) and it was the perfect space for us to have our own bedrooms and then living space to share and chat in. Compared to other airbnbs I've stayed at, this one was very clean and stocked. If you have 6 people, it should still be fine as long as you realize two people are staying the the living area.
If I ever come back to Edinburgh, I will definitely be staying here again and would recommend this to anyone looking!