My room had unstable and slow internet, it was dirty and the mattress was uncomfortable, with very sensible springs.
The bar and reseption area - on the other hand - was very good, with comfortable chairs, couches and a fast and stable Wi-Fi.
In terms of backpacking standards, the Smart-Stay is a reasonably good option, with a 24/7 reseption and a nice bar to start the evening in. But I wouldn't recommend it if you find a cheaper option.