hidey house

My bun has started the process of litter training, we’ll be picking him up in 2 weeks. I’m setting up his area & know they love a safe place to hide. I purchased a Timothy Hay Hide House (see link below if unfamiliar) but now I am second guessing if this will derail his litter training? If he...

Any suggestions on which hidey houses are preferred? Mine loved their cardboard boxes for probably the first month but now they are completely over it. I very rarely see them laying inside. Under my bed is their preferred choice of hiding. Is there any other ideas that they may enjoy?