So the book has been published for 4 months now across various retailers.
Got 20 reviews: eighteen 5/5 stars, one 4/5 stars and one 3/5 stars downgraded to 2 the next days -- the reviewer thought the detailed spy stuff was detrimental to the overall well-rounded romance. On the same day another reviewer said that she gave up as the book read like a romance, not enough espionage for a spy novel.
Maybe I should label it 'a historical novel with elements of espionage and romantic suspense'?
Big thank you to all readers for making an effort to leave your reviews! Your thoughts are much appreciated, including critical reviews.