The "Sofitel" is now called the "Mercure" Hotel. You have computer shops on the ground and first floors of the adjacent suhopping center. It has access from the Salwa Road side and the Hotel entrance side (entry direction South) - when you enter from the hotel side, the first shop on the right is the major print cartridge dealer. Other shop owners often source cartridges from this shop! You will do well to get there first!