Kasia and Joe's place was amazing! The flat was located in an area with super easy access to restaurants, shops, public transport, etc., while being set a few streets back so that the noises from the main road were not an issue. The flat itself is also about 1 mile/1.6 km from new town, so definitely walkable if that's your thing. On the walk to new town itself are a ton of different restaurants, shopping, and things to see, and most days I hadn't planned to go specific restaurants for food and preferred to just see what I could find on my walk to larger attractions.
The apartment itself was very clean and a good size, and it even had a washing machine which was a nice touch. I would 100% recommend the flat to anyone else, and would even consider staying again whenever I find myself going back to Edinburgh.