The room felt clean and was a nice place to come back to after a long day. It wouldn't be suitable for anyone looking for luxury but is totally fine as a roof over your head.
We didn't end up using the kitchen facilities, but the bathroom facilities were all fine. There was noise around the place but usually only until around 10:30pm and then around 10am in the morning again, with only one time there was a lot of noise around 6am for about 20 minutes. But overall one of the quieter hostels I've been in!
The lift is very very small, it says it can fit four people but at one stage I was in it with two others and it was super cramped. If you have a big suitcase or a wheelchair it might be tricky - although there could have been a bigger lift, we didn't ask! Also on accessability, just a note that the doors can be tricky to open from the inside, there's not a normal handle on it, it's like a little knob that you have to twist and could be hard to open! They also slam and that happens a lot but the noise didn't bother us, just a personal thing to gauge wherhter that would suit you or not.
I felt safe there, but was with my male partner so I'm not sure how I would have felt as a solo female but probably fine once I'd settled in.
It's just a few minutes walk from the Hammersmith station so the location.
I would go back again if I needed to stay in London on a tight budget or had business in Hammersmith, but would probably splash out for a little nicer place if I had the money.