freebeer
didn't look yet.  saw some such labels in use in other countries, but the overall map quality there was too poor to take the tagging there as accurate.
my idea is, particularly as turkish communities seem active and tightly-knit where i see 'em, is the Residence may see regular use to host social and similar cultural events, exhibitions, and whatnot that extend beyond private use.  if i find evidence of public or community interest, i would advocate mapping it prominently.
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simple text search:  first hit, concert review.  later hits, protests news items.  reads as if it is a significant and important architectural villa and well worthy of inclusion.  you are encouraged to repeat a similar search with images and localised to washington results, to decide if my blind armchair judgment is rubbish.