Allowing 4year old to stay at grand parents messy house?

We have recently moved closer to my husband’s parents and now there is a lot of talk about our daughter staying over at their house. Initially I thought it was a great idea, but now I have realised their house is just so messy I don’t know if I want her sleeping in there. They also have a dog that has become a little agressive and growls constantly. They keep him in a cage locked up, but my daughter is not at all afraid of dogs as we have a really friendly one and she knows how to unlock the crate.

My MIL has said she has a mental block at being able to clean their house and she has depression.

They washed our bed sheets for us and they came back completely covered in dog hair I will be taking them to the launderette now until we get our drier. Now they are looking at buying a blow up mattress for DD but how could she sleep on the floor if there is so much dog hair everywhere, I don’t want her to develop an allergy and anyways just breathing them in even just for one night occasionally.

I suggested to husband to us going away to stay somewhere for the night and grand parents coming over here to stay with DD but he wasn’t too keen on spending extra money currently.

I am going to be giving birth in a few months so it would be good for DD to have spent the night away from me before I go to the hospital, but I just can’t bear it in my heart that she would stay over there when it’s not clean and safe. What do you guys thinks? Would you let your child stay at a messy house and with a dog that’s potentially aggressive ?

Thanks for the replies.

they’ve just kinda dropped the subject for now, neither one of us has told them directly really. Once MIL said about their dog being aggressive and how our DD just isn’t afraid because our dog growls when they play together and I just said yes I agree I think it’s better you stay here with her rather than going to your house and there’s not been any further talk since then.

We have talked to her about aggressive signs in dogs but she just doesn’t really get it as it’s very similar than when our dog is playing. She knows when an animal is scared, but probably just needs a bit more time to read the body language to understand the difference between angry and playing.