Olympus Mons was a smallish residential housing area in the North-West of the sector of Eos. Its apartments were quite large, open and stylish making it possibly the most expensive part of town, and by extension the rest of Tharsis. Its also quite near geographically to the Canyon View, an upmarket shopping precinct for EDF sympathisers.
After Alec Mason assassinated the some of the corporate backers of the EDF at their economic summit, the Red Faction informant was tracked down and then interogated at the Olympus Mons residential.