The idea there would be that it's one of those things that's hard for consumers to evaluate in the time they have to evaluate it, because a walkthrough doesn't

The idea there would be that it's one of those things that's hard for consumers to evaluate in the time they have to evaluate it, because a walkthrough doesn't provide a representative sample. For example, you probably won't know how frequently ambulances take the road next to that apartment in the middle of the night. Dealing with information asymmetry is one of the big functions of consumer protections laws, and is one of the useful functions of government.