OK so see GW? You have to do what works.... think about how she was last night... more relaxed, friendly etc. think about how you acted last night... no pressure.
As MWD says.. be a "solution detective". do more of what works. Right now, that is what works for her.
So, the idea of the hotel already came up. I agree with Rabbit, let it go for a few days. See if she brings it up. If she does, be honest and say you would really like that then ask how she would feel. then respect her feelings either way. If she doesn't bring it up, you will have to do it anyway but be casual about it. I agree also with Rabbit not to make too big a deal of it. Make it nice, friendly, relaxed but not with huge expectations for romance that she may not feel right now.