The Metebelis Bar was a seedy watering hole in Solar City, a cosmopolitan city on the planet Galactica Minor. Its clientele included several species. At one point in its history, most of the bar guests seemed to have grudges against the Seventh Doctor —so much so that they chased a reporter named Miff out of the bar just for admitting he was a friend of the Doctor. (IHP: Once in a Lifetime)
Behind the scenes
The bar's name is almost certainly a sly reference to Metebelis III, a planet of great importance to the Third Doctor. It is not immediately obvious, largely due to the monochromatic nature of the comic, but can be found on a sign on the top-right panel of page three.