The insta-love was a little too much for me initially, but I really came to love Isa and Raf. The will they won't they vibes are great, their dedication to each other is amazing, and their individual strength was a real joy. 
This book did a great job of mixing the high-intensity Mafia life and a the "I want to live a normal life" vibes. 
It was a super quick read and kept my attention the whole time.