Despite Dante et al, we don't really know what Heaven will be like.
Heaven is a place far beyone our ability to imagine.
Jesus put it into terms we could understand: "In my Father's house are many mansions". That doesn't mean that Heaven is a huge housing estate. He means that there is room for everyone in Eternal Life and it will be of the highest quality.
"I go to prepare a place for you," means that each of us will be individually catered for and that our needs will be met.