Both of us have stayed in quite a few hotels and hostels across the continent and across Italy, but never, and I say NEVER, have we met a landlord or owner as genuinely friendly as Andrea. But this is not the only reason for our high rating. Let me thus recount our extremely pleasant experience from the beginning.
Having arrived at Cagliari train station, we had very little difficulty finding the place. After a few minutes walking, we already found ourselves in front of the door and were told, via intercom, to enter and go to the 2nd floor. Andrea greeted us there, and when he found out that both of us spoke fluent Italian, his friendliness almost turned into enthusiasm. Rather than just handing us the keys and doing the usual check-in formalities, he invited us to sit down together in the breakfast room, where we would then have a nice, long chat about Sardinia, the Sardinian language and our own Italy-related past. It is not an overstatement for me to say that by this point, we felt more like meeting a new international friend and sleeping at their place than checking in at some anonymous hostel.
Andrea explained how the self-served breakfast worked and apologised in advance for some details I personally considered rather irrelevant, for example the fact that all the food and drinks available were wrapped in their original packages for hygienic reasons. During our stay, we would mostly have cornflakes, yoghurt and croissants. Andrea filled up the supplies every day, just as promised. You do not have to bring anything yourself. Now, of course, if you are looking for a breakfast buffet like the ones served in real hotels, then what's available at Art Rooms might disappoint you slightly, but the super-easy-to-use coffee and cappuccino machines will surely find your liking. Coffee tabs for the machine would always be available in large numbers, just like milk and various kinds of sugar.