There are other cities you know

Here’s a list ripped straight out of Wikipedia
Treaty of Paris (1229), which ended the Albigensian Crusade
Treaty of Paris (1259), between Henry III of England and Louis IX of France
Treaty of Paris (1303), between King Philip IV of France and King Edward I of England
Treaty of Paris (1320), peace between King Philip V of France and Robert III, Count of Flanders
Treaty of Paris (1323), in which Count Louis of Flanders relinquished Flemish claims over Zeeland
Treaty of Paris (1355), a land exchange between France and Savoy Treaty of Paris (1515), planning the marriage of the 15-year old future King Charles I of Spain and 4-year old Renée of France
Treaty of Paris (1623), between France, Savoy, and Venice against Spanish forces in Valtelline
Treaty of Paris (1626), peace between King Louis XIII and the Huguenots of La Rochelle
Treaty of Paris (1657), established a military alliance between France and England against Spain
Treaty of Paris (1718), between Philip of Orléans, Regent of France, and Leopold, Duke of Lorraine
Treaty of Paris (1761), established the third Bourbon Family Compact between France and Spain
Treaty of Paris (1763), ended the Seven Years’ War
Treaty of Paris (1783), ended the American Revolutionary War
Treaty of Paris (1784), ended the Fourth Anglo-Dutch War
Treaty of Paris (1796), ended the war between France and the Kingdom of Piedmont-Sardinia Treaty of Paris (August 1801), ended the war between France and Bavaria
Treaty of Paris (4 October 1801) [es], the final peace treaty between Russia and Spain; see Treaty of Paris (8 October 1801)
Treaty of Paris (8 October 1801), the final peace treaty between France and Russia
Treaty of Paris (1802), ended the war between France and the Ottoman Empire
Treaty of Paris (July 1806) [fr], creating the Confederation of the Rhine
Treaty of Paris (1808), between France and Prussia
Treaty of Paris (February 1810), between France and the Kingdom of Bavaria
Treaty of Paris (1810), ended the war between France and Sweden
Treaty of Paris (24 February 1812), established an alliance between France and Prussia against Russia
Treaty of Paris (14 March 1812), established an alliance between France and Austria against Russia
Treaty of Paris (1814), signed between France and the Sixth Coalition
Treaty of Paris (1815), signed between France and the Seventh Coalition, following the defeat of Napoleon at Waterloo
Treaty of Paris (1817) [it], part of the Congress of Vienna
Treaty of Paris (1856), ended the Crimean War
Treaty of Paris (1857), ended the Anglo-Persian War
Treaty of Paris (26 May 1857) [de], ended the Neuchâtel Crisis
Paris Convention for the Protection of Industrial Property (1883), one of the first intellectual property treaties
Treaty of Paris (1898), ended the Spanish–American War Treaty of Paris (1900), ended all conflicting claims between France and Spain over Río Muni in Africa
Paris Convention of 1919, the first international convention to address the political difficulties in international aerial navigation
Treaty of Paris (1920), united Bessarabia and Romania
Treaties of Paris that ended World War I (at the Paris Peace Conference (1919–1920)):
Treaty of Saint-Germain-en-Laye (1919), with Austria
Treaty of Neuilly-sur-Seine (1919), with Bulgaria
Treaty of Versailles (1919), with Germany
Treaty of Trianon (1920), with Hungary
Treaty of Sèvres (1920), with the Ottoman Empire
Paris Peace Treaties, 1947, formally established peace between the World War II Allies and Bulgaria, Hungary, Italy, Romania and Finland
Treaty of Paris (1951), established the European Coal and Steel Community
Bonn–Paris conventions (1952), putting an end to the Allied occupation of West Germany
Treaty establishing the European Defence Community (1952), an unratified treaty
Paris Convention on Third Party Liability in the Field of Nuclear Energy (1960), liability and compensation for damage caused by accidents occurring while producing nuclear energy
Paris Peace Accords (1973), ended American involvement in the Vietnam War
Paris Charter (1990), helped form the Organization for Security and Co-operation in Europe
1991 Paris Peace Accords, marked the end of the Cambodian-Vietnamese War
Dayton Agreement (1995, formally signed in Paris), ending the Bosnia War
Paris Agreement (2015), an international agreement on climate change

But there is only one treaty of Trianon

Sure there are other cities, but can you negotiate in those? Paris has been proven to work. I’m not taking any risks. *signs the Paris convention on implementing the Paris agreement about signing more Paris treaties*