I drive a Corsa B 1.4 5 door (shape 1) regularly, they're really worth avoiding, not good by modern standards.
Positive points:
+ Reliable, one I drive is 13 years old, 100,000 miles and still on the original clutch.
+ Cheap and fairly simple to service, parts are easily available. The interior is easy to remove for any modifications, repairs, etc.
+ Narrow and fairly short, good on narrow country lanes and in tight spaces
+ Predictable, doesn't spring any unpleasant surprises, it's crap and it lets you know it.
+ Fairly roomy, not left wanting for space.
Negative points:
- Poor ride quality, nowhere near up to scratch, seriously wearing on long journeys
- Poor turning circle, easier to park a bus.
- Horrible interior, not especially comfortable seats and a cheap dashboard.
- Driving position isn't perfect for me, on long journeys an ache in my right leg develops & back pain sometimes.
- Very easy to break into, bang against the door with sufficient force and it'll unlatch. The transponder fitted to many Corsas stops theives getting the car started but doesn't stop them ruining the ignition trying.
- Gearbox is narrow and indecisive (looks like it's in neutral when it's in gear).
- The older 1.4 8v engine is dated and runs out of puff on hills.
- Boot isn't huge, but it's a small car so that's to be expected.
- Vauxhall were very stingy with kit on many models, a cigarette lighter was an optional extra on the one I drive. As was electric windows, power steering & central locking. They might have been more generous in the last few models.
- Black Plastic wheel arch trim fades with age on most models making them look scruffy
- 5 door features quite a few blindspots. The narrowness and high sided nature makes it harder to park than you'd expect. Mirrors are less useful than one might wish.
Other points:
It has next to no sound proofing. Which means on motorway journeys you won't be able to speak to anyone in the back and will find it hard to speak to someone next to you. On the plus side you will hear as well as see the inevitable bus trying to sideswipe you.