I've been going to that Yo! Sushi for at least 7 years and I have never been unhappy about it.
I'm surprised to see the terrible reviews, but then when you know how Yo! Sushi works (everything is written on the menu, even the price of the triple filtered water (not tab water)) it's easy to eat well (and too much on my last visit) for around £10-15.
They also have an extensive menu from where you can order whatever you don't find on the belt (dishes and sashimi incl.)
The staff is wonderful, always around and helpful. We had two 11yo kids with us and they were very friendly to them despite the language barrier. The belt conveyor is always a hit with kids and tourists who don't have that in their own country. And since it's very central, it's very practical.
However, it does need a good refurbishment...
And no, I don't work for Yo! sushi. It just happens to be the place where I discovered sushi because the staff took their time, 7 years ago to show me and explain everything I needed to know about the sushi.
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