There wasn't much to impress with in the Lestrange household. While the family wasn't living in poverty, or even middle class, their home was more functional than extravagant with very little in the way of opulence except for the large gilded frame around the family's crest proclaiming Sic Gorgiamus Allos Subjectatos Nunc. We gladly feast on those who would subdue us. Rodolphus had never been self conscious about his family's status in the Wizarding world and he certainly wasn't embarrassed about his home now. He took the way the Lestranges had a tendency to be over looked as something he could use to his advantage.
Surveying Bellatrix's back, his hand moved according to his heart's will. He pushed the small finger on his right hand up through a currently tamed curl, doing his best to not be noticed. "You want me to take you to Hogsmeade?" He repeated, but could she blame him? She had come to his home unannounced and asked him to go out with her. He was certain it wasn't a date but still an event none the less. "What's in Hogsmeade? Don't tell me! You can't wait to have a sit down at the Hog's Head with a butterbeer? Or maybe Madame Puddifoots?" Alright, he couldn't say that with a straight face and soon began to laugh again.
"I can't imagine that anything you would need to do in Hogsmeade would require me to help you achieve it. What would be my reward?" If he considered it, Rodolphus would probably be able to determine that Bellatrix was up to mischief without too much thought. He was an avid reader of her journal and comments thereafter to the point that he could probably recite whole conversations from memory. He knew anything she would want to do that he would also enjoy would most certainly revolve around violence or mayhem of some sort.
He also knew he'd follow her there even if she hexed him and walked out the door with no further conversation to be had.