It has its flaws with keeping consistency with majority of the characters present but it does a well done job beong consistent in the atmospheric and emotional impact department, If you care so much I would recommend you watch this first then watch the remake show Fate: Unlimited Blade Works, the tone is completely different and characters are behaving differently as well, I'm almost halfway through the remake and it tries so hard to fix the mistakes the original did and I appreciate it so far even though they made it feel more anime and cheesy the original is more grim compared to it, so it's your call if you want to watch both or whatever.
Review of Fate/stay night
