Thanks for all your advises.
I decided to add photo outside the window, but it made my render look really dark, so I've changed the setting of the camera to:
F-numer 8
Film speed 320
Shutter speed 30

There are some new stuff on the model, but in general it is the same model as in the first post.

@rspierenburg:
Firstly I don't take your advises personally, they were really helpful

1. I've change all the whites and used different shades for wall panels, furniture and paint. You were right, it looks so much better
2. Downloaded and used in the model, although I don't see much difference. Maybe my settings are incorrect?
3. I've added some bumps etc.
4. Changed to 65

@tparks
It is on. Amount 0.6 Subdivs 12 Radius 30 - although I'm not sure if is it optimal.

Render looks so much better now, but the shutters are overexposed. Environment is 1,0 for GI. Or maybe the fault is somewhere else?

I have problems with my renders. All of them they don't look like photo at all. Does anyone know what is wrong with my settings?

There are 3 spot lights. On the ceiling:
intensity 25
Units : defaults
Spot Angle: 1,9
Penumbra angle 0,4
Decay Linear
Penumbra Linear

And 2 sconces:
intensity 10
Units : defaults
Spot Angle: 1,8
Penumbra angle 0,3
Decay Linear
Penumbra Linear

I tried so many different V-ray settings confused The ones on the photo attached are:
Camera:
Type - Default
Physical Camera On
Type - still camera
Shutter speed -100
F-number 11
Film speed - 100
Distortion - 0
Zoom Factor - 1,0
Lens -0

Indirect Ilumination:
On
Refractive
Post- procesing:
Saturation - 1,0
Contrast base 0,5
Contrast 1,0
Multiplier 1,0 Irradiance Map
Sec Bounces
Multiplier 1,0 Light Cache

Irradiance map
Min rate -3
max rate -2
HSph 50
Interp samples 20

Clr 0,4
Nrm 0,3
Dist 0,1
iterp 2

Light cache
Subdiv 800
Sample size 0,02
Scale Screen
Number of passes 0
Depth 100
Store direct light on
show calc phase on
min paths 16

How to make the render look more realistic?