Serviced offices in Nantes. This office space is In the heart of the Euronantes complex and the business centre has prime location in a business district unique to the Atlantic coast. Opposite the Cité des Congrès and at walking distance from the TGV station, the business centre is located in the heart of the city’s business area, which is already the economic centre of Nantes. Avenue Carnot is one of the main roads leading into the city.