"A Mecca for X" is a very common expression in several languages and AFAIK it never had a bad connotation. https://books.google.com/ngrams/graph?content=a+mecc

"A Mecca for X" is a very common expression in several languages and AFAIK it never had a bad connotation. https://books.google.com/ngrams/graph?content=a+mecca+for&year_start=1800&year_end=2000&corpus=15&smoothing=3&share=&direct_url=t1%3B%2Ca%20mecca%20for%3B%2Cc0 https://books.google.com/ngrams/graph?content=a+mecca+for&ye...