We paid for a superior room, and were glad we did, as - although it was still small - it was big enough for a few nights, and had a comfy king size bed (and kettle, which bizarrely doesn't seem to be included with lower grade rooms), and on the top floor we has a very narrow roof balcony, that was good to get some air. The bathroom was absolutely tiny, and couldn't even fit in a normal size sink, and no-one had bothered to fill the shower gel container, but this was filled when we requested it. They try and avoid offering room service, and even though we asked for our room to be cleaned (it felt like a negotiation at reception, but they pushed to only clean on the middle day of our stay, but, despite this, our small bin was never emptied, nor tea or coffee replenished). Also, although there were blackout curtains, they let lots of light in around the edges and along the top as there was no pelmet, and, with it getting light from 3am, this was a very early wake-up call.
Staff were polite and the whole hotel was clean and well maintained. Breakfast was fine - and if you went through to the restaurant area there was much more space and a proper coffee machine, rather than being in the darker main area.
Everything was functional but just lacked any sparkle, but the location was spot-on being 5 mins from the train station and all the main central locations being walkable.