Just moved into new home and want to freshen it up by having it painted. Flat is 90 sq m with 3m high ceilings and 2 m high windows. There is some filling of cracks on walls that needs doing. The first quote for the whole flat was 1 k. The second was 8k from a Polish firm who has done several big renovations for family. Even if i didn't get the most experiened painter, would it be obvious? I thought painting was straightforward. Am i missing something?