I arrived from the US to take a new job in the UK and spent 10 days isolation (+7 after) in this flat. The place was clean, as advertised, and the hosts were kind and responsive. I would stay here again under more normal, "just visiting Manchester" circumstances.
That said, some points that may inform future longer term tenants:
1) The hosts have a family, and while I felt I had privacy, the presence of small children meant that it was sometimes difficult to work from home due to noise. Fair warning there are also parental controls on the internet.
2) I like to cook and was optimistic that the sink in the corner would be fine but it was more uncomfortable to use than I predicted, so I ended up trying to avoid dirtying too many dishes to wash. With that and the limited counter space it is easier just to stick to very basic things, like reheating, pasta, etc. That said, there was a cutting board, salt/pepper, a pot, a casserole pot, and knives/kitchen utensils, so it is definitely equipped to cook. Also good to know: the fridge does not have a freezer compartment.
3) I bought my own laundry detergent / kitchen soap. The washing machine ripped some of my clothes but maybe this is just because I am unfamiliar with the washing machines in the UK – it certainly works and my clothes DID come out clean...
Some positives: great value, treadmill kept me sane during isolation, the Sky sports channel, the kettle heats super fast, great outdoor lighting in the bedroom, the location is close to train station/grocery/airport, the heating is great, the office chair is small but comfortable.