Okay kiddo, let me explain to you what Sessrúmnir is. Sessrúmnir is a special house in Norse mythology that was owned by the goddess Freyja, who is the goddess of love, fertility, and war.
This house was very unique because it was magically built, and it was made in a way that made it easy to move wherever Freyja wanted it. This means that Freyja could take her house with her wherever she went, and it would always be there for her.
Now, this house wasn't just any ordinary house. It was said to be very beautiful and big, with over 500 rooms. These rooms were not like the rooms we have in our homes today. Each room was made to fit the person living in it, and it was designed to be very comfortable and cozy.
But wait, there's more! Sessrúmnir also had a very special room in it called Fólkvangr. This room was where Freyja would decide which warriors who died in battle would go to live with her in the afterlife.
So, to sum it up, Sessrúmnir is a magical house that belongs to the goddess Freyja. It's super unique because it can move around, it has over 500 cozy rooms, and it also has a special room where Freyja would choose the warriors who died in battle to live with her in the afterlife. Pretty cool, huh?