How about converting the living room into 2 small rooms and the second bedroom into a living room

You can consider it, you should be the westernmost house, see if the wall of the south bedroom and the living room is a load-bearing wall, if not, you can open it, and then change the west half of the living room into a bedroom.

Make some screen-style bookshelves or other furniture to store things. Of course, if the space is too small to be partitioned with furniture, you can use a curtain to pull it up. The curtain should be made of good quality and thick cloth and lightweight aluminum alloy guide rails in order to close and open. >>>More

You can also enter the bathroom by opening a door from the wall that is shared with the bathroom in the study, and then make a partition in the middle of the bathroom.

Imitation stamps.

Imitation background. A large area is carpeted. >>>More

The bathroom is easy to change, but, the drainage system is not easy to change, you think about it yourself, change the bathroom, smash the wall, build the wall, you can, but, the drainage system is dead, how do you add the drain, even if you can add, what is the height, it must be higher than the ground, then your toilet, how high should it be, besides, you can't put the drain pipe open, you can only install it secretly!