The once-delayed Games are due to start on July 23 amid concern that the influx of thousands of people from around the world could contribute to the spread of the coronavirus.
Athletes will be shuttled in and out of the village and be tested for the coronavirus every day. Olympic rules ban singing and chanting during events and require athletes to wear masks at all times except when outdoors, sleeping or eating.
The shopping area of the village features an automatic teller machine, dry cleaner, post office, bank and courier counter.
The wooden plaza, which draws on Japanese minimalist design aesthetics, follows the Tokyo 2020 theme of using timber in the construction of Olympics venues, including the National Stadium.
The apartment complex abutting the shopping plaza was built on reclaimed land, and designed to house about 12,000 people in 23 buildings. It includes shops, a park and a school. The buildings will be converted into flats after the Olympics.