Today I used 3 hours of my afternoon to build the new LEGO Architecture set 21017 Imperial Hotel.
It is a very nice build and a lot of small elements in big quantities so good buy for builders, collectors but also to fill up your part inventory.
You can find a great review done by a EB member on the Eurobricks website.
Here some pictures taken by me:
At the beginning.
Half way through.
3/4 is done.
Done 
Really nice Jan. Why two different boxes? And which one is mine?
The right ist the box and the left the BI. You need to wait a little.