Hello Christine Cantello
Do you have space in your own garden to grow vegetables as well as the space your neighbour is giving you?
Your neighbour is nice to give you a greenhouse and a bit of garden, sounds great they get there garden looked after and don't have to do any of the hard work.
What are you planning on growing in that space? Is it to be shared with your neighbour anything you grow?
Maybe try and grow some flowers for cutting, or to attract the bees for your veg.
Gardengirl you are very kind