We coslept with our son at the hotel, he had never been in a crib, and would scream every time we would place him in it even though he was sleeping. He would play around in there a little bit during the day.
Now that we are home, we moved his crib very close to the foot of our bed, and I keep my arm in his crib so he knows his Mama is right near. (we are now sleeping with our heads near the crib) It has seemed to be working good so far...
I wish you luck, I'm sure two littles ones is so much work!
I know I'm so tired at the end of the day with just one