When you are renting you are going to find that as well as condom packaging, lube stains and evidence of sex. Just part of hosting in my opinion. Whether the packaging was in the trash or on the floor I suppose you would have seen it anyway. I'm not sure what you could put in your listing to discourage this that wouldn't come off in a negative way. But maybe others will have some idea.
Leaving the space messy certainly can and should be in their review either publically or privately. But I would not comment publically on their type of trash as that would somehow come across as trying to shame. All negative type reviews read best when not emotionally driven. Just the facts....