Got back from Adelaide this afternoon, and really enjoyed my stay at the Indigo.
Location worked for me, as was quiet, a few seconds walk to the Central Market and Chinatown for cheap eats, and 5 min walk to the theatre. No problems for tour pick-ups, but a decent walk to more popular restaurants at other end of the city grid (although trams are now free within the city limits, like Melbourne).
I loved that the rooms dont have carpet, rather a mix of tile and hardwood floors with a rug under the bed, much easier for housekeeping to keep clean. The shower (not a shub in sight) was spacious and had good water pressure, the king size bed was comfortable and the duvet had an actual cover (none of that quilt between two sheets nonsense), nice pillows (and a pillow menu), plenty of hanging space and proper hangers. The tv had chromecast, there were plenty of powerpoints, USB/USB-C and wireless charger, conveniently placed light switches, and when you hit the master off, the control panel for the air con also dimmed.
Despite having no status I was offered a late check-out (which I didnt need) and the included breakfast was tasty and filing - a choice from the a la carte hot options (i had big breakfast - eggs, bacon, sausage, rosti, toast, beans if you wanted ), unlimited barista made coffee, juice, a juice shot of the day and more toast, pastries, fruit, muffins, donuts from the buffet if your were somehow still hungry.
I would stay again.