You had alot of empty space in the house. The interior walls where not realt needed. So they were taken off. More light more fresh air everywhere. That space isnt ever used. So better atleast you can see more space while sitting in the living room.
The master bedroom is at the entrace with a nice warn office for the father and mother to use, they have there new little full bathroom. There is alot of new space there. On the upper parts there is the room to the right for the new family member or a guest room. The rooms to the left are for the girls to share, the table are made so that they can chat while doing homework and that is the optimal degre angle for sun light. They have a very clean movement in the room. The living room is made in two parts. For the biggest one is for watching TV, while there is a little part for the fire place and members that want some peace and quiet. The kitchen has be redesigned to have an island table, while having a big table for dinning.