What I have done in terms of lighting is pretty ok but I want the bookshelf to be highlighted a bit more and other parts of the room to come into view a little bit more but just enough to be noticed. The center of the project is the light coming in from the window and it should not be taken over.
For this of kind lightning you have to add Irradiance Volume object and under Render Properties > Indirect Lightning > Bake Indirect Lightning.
- your dimensions of object is huge (chair 40 m) ... you can select all and scale it down or go to Scene Properties > Units and change it to something like 0.02 to result with something closer to reality
- usually is used Sun light type (but I see it penetrates walls too much and I don't know how to avoid) always helps to ad Solidify modifier to walls
- to avoid unwanted volumetric penetration change Render Properties > Volumetrics > Start to 4 End to 10, Distribution 0.8
Same setup (irradiance is not used off course) ...
If you need brighter interior, there is more things you can try, but just increasing light Strength seems to be enough.