I don't think there are giant spiders in Morrowind, but there are plenty of other annoying creatures, like Cliff Racers. Morrowind seemed a lot easier than Skyrim, so you shouldn't have too much trouble. I loved Morrowind, but I have a major problem with it; the further you get, the more often it freezes. And it'll freeze a lot...
"I used to be an adventurer like you, but I took an arrow to the knee."
God yes. Morrowind is seriously a fantastic game. It IS dated. If you can get past that, then it is a great game. The exploration, the factions, the loot. Oh it's amazing. It's in my top 3 games of all time and I still play it occasionally.
You can fly in it!
One of the difficult things to get past is the leveling system as it is quite different then Skyrim's, but if you played Oblivion, then you should be familiar with it as they are similiar. However, the enemies and items don't level with you.