We have stayed at The Mill many times. I knew it had been purchased by Marriot and was a Courtyard although I had not been there for a couple of years. What I didn't know and do want others to know is that there is a disconnect going on here. Briefly- when you book a room through The Mill, you will be given a "timeshare" room. There are many timeshare units there. When the owners of that week come in, you have to move. The Courtyard rooms have been renovated and are fine but the repacking and moving rooms is not. It would be less annoying if you were advised of this at booking. However, it came as a surprise and you have to check out, check back in to the Courtyard system and in the process lose an afternoon waiting for the next room to be ready.
The Mill has always been laid back and friendly. After twenty years of visiting Aruba and staying at The Mill for about fifteen of those trips, we were just disappointed that this property has become so disjointed.
The location is still great, the long time Mill employees are still wonderful, and I have only sympathy for the front desk staff. Just know if you book online through The Mill and not through Courtyard, you may be subject to a day of serious inconvenience.