Nice car - good colour,
Bonnet dent can't be that bad - it isnt noticable in the pictures.
Missing locking key is a pain.
I had the key for my old Mk4, but through use it decided it didn't want to be a key any more...
Invested in 2 or 3 types of removers, I had managed to get 3 of the bolts of myself, the last one refused to come off.
After visited several tyre places & even called the RAC, I ended up going to an Estonian dude who apparently was ex-special forces, he charged in advance and got out the biggest snap-on impact gun I have seen + bolt extractor - only 2 minutes later it was off and I was £50 lighter.
IIRC - the best type is a giant version of the Irwin bolt removers like below, seems to be some chinese versions on ebay:
But what tool you can use will be dictated by space in the wheel around the bolt.
If that was my Mk5 with Monzas, I would have been completely f'd - too deep and no space, leaving no option but drilling the bolt out.