I know I'm not being unreasonable in being massively pissed off that the landlord didn't mention that the kitchen sink leaks really badly and the floor under it is full of mould, but is it unreasonable enough of the landlord that we could/should take it to court if he doesn't get it fixed immediately? I am not willing to live in a house if I can't use the sink and I'm breathing in mould spores for weeks/months and definitely don't want DD to be exposed to the mould for long.