Alright, here's a modern bathroom interior from Modelling class (I apologize for the delay). Everything is modelled in NURBS, and yes, reference was used. I completed this in a day (I'd say not more than 6 hours), and all the details are mentioned below:
[This bathroom comes with a fully functional showerhead with adjustable shower curtain, toilet with flush, a big round sink with interior water pipes for hot and cold water, storage vaults, a pair of exercise weights, towels, tissue paper and soap/shampoo for your convenience, and a tall, wide window to admire the view!]
Enjoy your stay! :p