"Oh - " His inflection was surprised and Dan took the book, curiosity overcoming his features. "This is - well, this is great," he carefully flipped the pages a little, then noticed the sunflower in the cover which made him grin fondly, a bit of sunshine injected there too. "Thank you." He'd be sticking his nose in that for sure, later on, curled up in bed under the blankets. He often read before going to sleep, since it seemed to be the thing that tired his brain out thoroughly - he'd read and read and read, and then his eyes would flag, sandbags attached to them. Out like a light.
The question about doing work in here was also something of a surprise. He set the book down on the coffee table and stepped closer, cradling Bill's face in his hands for a moment - just to look at him, before Dan leaned in and kissed him. "Sure - with your wand, right?"
He even managed to make the question sound cheeky. In a dry sort of way.