We've had our Swift for twelve years, and it's always sailed through it's services - no damp, nothing not working, and only routine jobs done! We have had the shower tray replaced twice. Once it fractured, and was replaced under warranty, and the second time it failed again and was replaced free of charge!
We can't complain about anything, except our initial experience with a faulty suspension rubber in the axle, but that was sorted out quickly between Swift and Alko, and the work done in days to allow us to continue our holiday. Yes, we've replaced the water pump because it failed, but I rather think that was due to the build up of debris and mould inside it, and not a manufacturing problem.
I can't fault our Swift, or our local dealer. As you say, not many people post about their positive experiences, so perhaps more of us who've had few problems ought to do so.