Fei is really aware of Mikhail's interest. When he went to the hotel he was almost sure of what would be asked from him, Im sure. ٩(๑❛ᴗ❛๑)۶
He did not do it to crush rebels. He did to save Asami. That is the importance of it that he would go so far to save Asami because he still love him with all his heart. He went to Mikhail because he very much knows that Mikhail wants him. Mikhail has not been subtle so Fei knows he can use Mikhail's interest in him. I do not feel Fei has any care for Mikhail at this point. His eye is on Asami still.
hmmmm....judging by what we saw till now, what you say has a lot of sense. But I would really like in the continuation of the story to see Fei moving on. Though Asami cares for Fei, it is crystal clear that Aki is Asami;s number one person and that won't change. Having Fei still chasing after Asami would make him look like a third wheel and would degrade his character. And he deserves more than to be just one more person craving after Asami;s love
What kind of emotion do you think Fei has at the moment for Mik. He is definitely not in love with him, he still didn't show that he cares, but it is possible that he is at least slightly attracted to him? To be honest, I can't imagine Fei going into bed with just anybody for the sole reason of having rebels crushed. And he agreed quite fast. Even Mikhail got confused, his face expression was priceless :D Which brings me to the second question...Did Fei go to Mikhail because he knew that he could persuade him, if not with his money then with his body and charm, to take down the rebels? How much is he actually aware of Mik's desire for him????