Okey dokey, here's the dealio.
Edinburgh is a very compact city. Everything's confined to within around a ten mile radius, and even that is being generous. The University buildings are found primarily in George Square, if you're a humanities students, or King's Buildings if you are of a scientific inclination. The former is around 15 minutes walk from Pollock Halls, the latter around 25-30 minutes. There is a free university shuttle bus that runs between George Square and the King's Buildings. There are university unions in both King's Buildings and the George Square area (three within 5 minutes' walk of the latter). Princes Street, the main shopping centre, is ten minutes walk from George Square, and there is a cinema located there. Alternatively, Pollock halls is fifteen-twenty minutes away from Cameron Toll shopping centre, again where there is a cinema. Clubs are mainly found further out, perhaps half an hour's walk from Pollock, but bus and taxi services are, on the whole, excellent.