The city's services sector is diversified and well-developed by international standards, and accounts for 76 percent of its economy (compared to 59% for all of Argentina's). Advertising, in particular, plays a prominent role in the export of services at home and abroad. However, the financial and real estate services sector is the largest and contributes to 31 percent of the city's economy. Finance (about a third of this) in Buenos Aires is especially important to Argentina's banking system, accounting for nearly half the nation's bank deposits and lending. Nearly 300 hotels and another 300 hostels and bed & breakfasts are licensed for tourism, and nearly half the rooms available were in four-star establishments or higher.