How many letters does the top answer for “home of plaza hotel” have?

The most common answer is manhattan (9 letters).

Crossword clue: home of plaza hotel

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

manhattan 9 letters wd-fact-v3

one of the five boroughs of New York City

newyorkcity 11 letters wd-fact-v3

home of ambassador hotel 50% similar → losangeles

home of cecil hotel 50% similar → losangeles

home of gevora hotel 50% similar → emirateofdubai

home of hotel arts 50% similar → labarceloneta

home of hotel astoria 50% similar → bolshayamorskayastreet, saintpetersburg

home of hotel chelsea 50% similar → manhattan

home of hotel metropol 50% similar → tverskoydistrict

home of hotel moskva 50% similar → belgrade, moscow