Not read the other comments.
Is it a house that will appeal to families? If so, it doesn't feel like a family house. I'll be honest but I hope I don't sound rude, it's very dated. It looks well looked after and big and bright but a bit old people rather than boistorous family.
Could you put a bed and wardrobe in the office? Personally I think it's easier to imagine a bedroom as an office rather than the other way round.
Also, make the third bedroom into a bedroom. If I've understood the photos, it's a room with a sofa right now which is a bit odd. That makes it obvioys it's a 3 bed.
Of course, it might not be on the market for a family anyway. :)
I'm not sure I'd really know what to do with a living room and a living room/dining room. Could you turn one room into a large dining room and keep the other as a family room? Give them some purpose?
The bathroom is very striking and it's something which people might not be willing to take on or live with. A basic white suite costs about £300 and would replace like for like although you'd need to do something with the bidet. On TV they cover tiles with some sort of sheeting. That would save the time, expense and mess of retiling.