The 2nd edition Seattle Sourcebook goes into detail on the Renraku Arcology as it was in the 2050's. (Pg. 47)
It had 620 stores and restaurants, most of them Renraku owned. There were 265 non-Renraku stores. (Including Lordstrum's, The Beax, and Ivar's Seattle Dining)
Floors 1-5 described as follows:
These floors house a shopping mall as well as a variety of amusements, sights, and spectacles on the first floor. These include a tropical forest complete with twisting vines, a swimming pool, a coral reef aquarium, piped-in sunlight, and a waterfall cascading down from the ceiling of the third floor over glittering quartz boulders from Madagascar. There is also a permanent circus, a zoo, a stage, and an amusement park. Entrance to the first floor of the mall is either by elevator from the garage or through one of the 16 entrances along Renraku Avenue and Fourth Avenue South.
There's a monrail station on the 3rd floor, east side. There is a bus tunnel station on floor B5, and garages on B2 through B6. (Basement levels) A few of the popular bars are the Frag Grenade, the Blue Room, and Rumpelstiltskin's. Floor 6 is the mall offices and the Club Quarter, which is a group of 16 clubs, including the Frag Grenade and the Blue Room.
Overall the Arcology is 780 meters by 650 meters and 828 meters tall. (969 when completed) It has 276 floors (320 when completed) and 329 elevators (401 when completed) It has a population of 70,000 permanent residents. (92,000 when completed) It has 36 hospitals and clinics when completed. It was at one time the 9th largest building in the world. It's windows are tinted a pleasant and appropriate shade of silvery green and can withstand gale force winds. It can grow its own food, purify its own water, dispose of its wastes, and provide everything its residents require.