Calling Landscapers and Home Re-modellers. Makeover of Pique Hearth (Pancakes House)

And not sure where to start with upstairs.
I'm deciding that Bob and Eliza have been married about 18 months or so. Honeymoon period is likely to be wearing off - maybe fast.
They are young adults; so needing to bring some modern and personal style into their private living space/s.
Should I keep the seperate bedrooms, or make one a guest room instead?
{I feel downstairs still works as I'm saying the property is inherited and came with most of the furniture.}