The location - about a 100m from the Grassmarket- is great for festival going but would be good for sightseeing more generally. Flat is good for 2 not sharing (in this case dad & son) & would be fine for family w one child, could get pokier for more than that. Looks right on to castle, & despite being v central is quiet (apart from sound of tattoo during festival). Clean & well equipped. Supermarket 2 mins away for supplies, but also a mass of tea rooms, cafes & restaurants almost outside. All towels & bed linen very good. We were staying in mild August & it always felt warm, tho no heating was on, so I'd imagine is pretty easy to keep warm in winter. Really hard to fault as a place to stay.