Lending Works, has anyone had experience of lending

Hi,
I'm new to this forum so excuse me if this has been asked before.
Has anyone had experience of Lending Works as a site to use for savings and income?
It is my first attempt at using P2P for savings, so any advice in using this platform would be appreciated
Do they offer any introductory bonuses?
Can you control what rates you accept on your savings?
Is it really easy to withdraw if needed?
thanks