Location - Walking distance to the "downtown" area of Edinburgh, including Edinburgh Castle, Old Town, Princess Street and more. Plenty of shops and restaurants within minutes walk. That said, despite being in the middle of the action, the street itself is quiet as it's mostly residential.
Apartment - Recently refurbished, with brand new kitchen and bathroom. Do note when we stayed there was no wifi in the apartment.
Overall, we paid top dollar given that it was over new year's eve, but we felt it was worth it given the location and comfort of the apartment.