It's pretty nice. Good job.
Like Zulious said, the furniture could use some work. A lot of it is unusually large. Different rooms could have different patterns on the walls and different types of ceilings. The exterior is a little on the generic side too, but that's to be expected from something that only took 3-4 hours.
And doesn't it get a little annoying having to unlock every door? It would make more sense to just lock maybe an office and the ones leading out of the building. :p
7/10. Keep it up. <3