Nice scene 
If I can make some suggestions, I would add a bit of mi’s for your computer screens because they obviously use all the same static material and add a bit of dept to your windows, it look like your scene is under water (glass effect) without the caustics. Maybe add a chrome frame around the windows to hide the low poly hole. I would add 1 or 2 small lights under the computer desks to add a bit of lighting contrast / variety.
Overall, very nice 