This is a cheap place to stay, as the name implies. So I suppose it's not fair to expect too much. That said, it has a bit of a grungy feel to it, which made me uncomfortable. The bed was fine (clean), but whole place smelled a bit musty, and especially the bathroom, which is also the shower room (rows of toilet stalls on one side, shower stalls on the other). I enjoyed the breakfast, and it wasn't a bad price (by Finland prices). They do charge extra for a towel (3€ at the time of the review), so bring your own if you can. As their own pictures show, the beds do not have any curtains or other ways to make yourself not visible to others in the room. Each room (which can have lots of beds in it, depending on your booking) has a locked door that can only be opened from the outside by keycards belonging to those staying in the room, and that provides some sense of security and privacy. Lockers are available for storing valuables.
Overall, it was probably worth the cost. But I didn't enjoy the "vibe" of the place. If I'm back in Helsinki, I would see if I can find a cleaner, more appealing place to stay at.