I've had experience of something similar, I tried to negotiate and it failed, I therefore accepted their offer straight afterwards and then just looked for jobs elsewhere.
I'd suggest just speaking to them about the holiday offer and ask them about the future and what they see you doing. If it's not as positive as you'd like, I'd suggest just signing the contract and looking elsewhere.
If they don't value your skills I'm sure plenty of companies would, just make sure you go from your job to another job without quitting!
Oh and I do have to say, that's not legal at all with the 2 week thing, previous employer tried that on my colleague and she just threatened them with legal action and they backed off immediately. These HR people seem to have no legal backgrounds in that sense!
I'd suggest just speaking to them about the holiday offer and ask them about the future and what they see you doing. If it's not as positive as you'd like, I'd suggest just signing the contract and looking elsewhere.
If they don't value your skills I'm sure plenty of companies would, just make sure you go from your job to another job without quitting!
Oh and I do have to say, that's not legal at all with the 2 week thing, previous employer tried that on my colleague and she just threatened them with legal action and they backed off immediately. These HR people seem to have no legal backgrounds in that sense!