If that's the staircase, just imagine the rest of the place…

While many interior shots need a significant prep and post-production time, the 'details' don't. Typically, they can be done on-the-fly and shot with ambient light. In fact, it's better when they are shot with ambient light as the captured image is very representative of the true feeling of the space.

There's not much to say other than I wouldn't mind living there.