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It's doable but not easy to completely disguise it in multi finish plaster. If I'm trying to make it disappear I usually line it with a very thick lining paper. Sometimes that's not the best idea in a kitchen though.
Mostly it doesn't need to be completely disguised and a lot of people would have a decent go with easy fill and a sander. Easy fill is quite a soft finish so the walls can easily be marked though.
A good middle ground is a harder filler like Toupret interior filler (TX110). More expensive though and you might need to seal the wall before applying the filler.
Chances of being able to skim where the tiles have been removed or am I better just doing the whole wall?