The Castle of Carnal Desires by Grace McGinty

When Aili Gowan’s boss insisted that she project manage the creation of a new hotel in Scotland, she knew it would come with a catch. She wasn’t surprised when her boss wanted a boutique sex hotel buit in a crumbling Scottish castle in the middle of nowhere. She was only moderately surprised when her contactor and consulting sexologist were sexy Scottish twins. No, the real surprise was that the castle wasn’t as empty as she originally thought.
Aili has to battle protesting townspeople, escalating violence, and her own desires, to get the project finished and still have a job when she returned to the States.