Not a big fan of everyone and everything being 5 stars, but in this case, Piazza Mulino 26 rises well above any of the other 13 properties we stayed in over 3.5 weeks. Constant communication from our host so we knew what to expect and when and even tried to accommodate us for our evening flight.
The room is in very good condition - modern and stylish - with more amenities than the average room like a mini fridge, coffee machine and electric kettle. Plenty of hangers as well.
The bed is very comfortable with nice linens and plenty of pillows.
There are tables available for use within wifi reach on the piazza. By the way, it seems not all Matera accommodations have wifi, so check the amenity listing (Piazza Mulino 26 does have great wifi).
As well, our host gave us great information regarding the best walking route, route to the national park and interesting things to see. The old city is just a few blocks away, so it is very convenient.