Dream About Grandmas Secret Room

I keep having dreams in my grandmothers house. I go into a trap door above her bedroom door. There's a secret retro type room. It starts as a open wood room with a luxury bath in the left corner by the door. It's got jets and it's huge on top of this shelf type thing with steps. The room extends for about 30 feet with random lamps around. In the far right corner is a king size bed with like mint green covers. It's all very 80's style. On the right wall there's a door to another room. Everything is wood again with more furniture and more beds. It's all very well kept. It's huge and shouldn't fit in the house. On the left of that door is a glass wall. Right in front of the wall is a green tile room. It has a huge bath that dips into the floor and is about a 10x10 square that is about 4 feet deep. There's stairs leading into it all around that are also meant to be sat on. There's a showerhead on the back wall. This is only one of the secret rooms. There's also a room with a hidden slide in the wall, and a bunch more luxury bathrooms. In one of these dreams there was a zombie apocalypse and we all had to hide in the secret room above my mamaws bedroom. It was terrifying and my mamaw ended up being eaten by zombies. I woke up crying and missing her.