Hi,
I do crate at night and it has gone really well with Barney. I put the crate in the bedroom, facing the bed so he can see me. I got a bag of delicious treats and put them in a jar by the crate on my dresser. At night after I'm sure he's gone potty enough, I follow the same routine of carrying him to the crate area, getting the treat jar down, asking him to sit, put the treat in the crate and say 'go in crate' and 'good boy'. He runs in the crate to enjoy his treat, and I close the door.
We got him at 8 1/2 weeks old and started doing this right away. The first few nights I left a light on so he could see me in bed and I complimented him on being quiet a few times. The first nights I also got up and took him outside a few times even without him asking. He never did anything or cried, so I stopped that and he sleeps all night. Granted, I am sleeping shorter overall hours, but I nap
A factor that might have helped him is that we have two dobermans. The first nights when he made noise in the crate, they came off their couches to check on him. I'm thinking their presence, and being able to see us in bed has helped him learn to settle down. The routine in the evening also seems to help. As soon as we come inside from that last potty break, I can see him getting excited about the treat jar. He's jumping around and excited. BTW, I've switched the treat to his regular kibbles, and just crumble a real treat in the jar to flavor them all. So he's really only getting two additional kibbles
We have always had our dogs sleep in our bedroom with us. I think they are pack animals, so being close with us when we are home is important for them. Also, I think of them as mini-alarms in the case of bumps or noises in the night. So we all get comfort from each other. I wouldn't allow a dog free roam at night, however, until they are completely trustworthy.
Whatever choice you make as far as sleeping arrangements, you should try to reward good behavior and avoid rewarding behavior you do not want. Responding to crying is rewarding behavior you do not want. Try to figure out what your puppy likes (typically attention, pleasing you, and food) and use those things to mold behavior you want for the dog long term.
Good luck and congratulations on your little love bug.