The machine is fab.  'Does what it says on the tin.' the 4 star rating is only due to the grip on the lid of the reservoir which has to be lifted to fill, whether taking the whole reservoir to the tap and filling or filling with a jug.  My grip is not the best and it is awkward to grip and lift without dropping the lid, which I have done so this is down to my personal situation but everything else is great and we are very happy to have purchased this coffee maker.