This is very convenient for having grinder and brewing in one piece.  Especially it includes reusable coffee filter, environmentally friendly. 
The only annoying thing is, after making a perfect coffee, the water will flow all over the counter surface. Unclear why the water leak under the base board. 
So I have to drain the water tank and flip the coffee maker upside down to drain any remaining water from water hole.  
Then there is no issue with this water flowing over my kitchen counter. 
For that reason, I do not fill the water tank to maximum level.