@Cara27
Hi Cara - any innovative start up is to be recommended for the workthat goes into it etc...here are a few comments that come to mind. Some may be helpful - others you may find a bit 'raw'
My understanding is you need to have an active property lisited on the site to offer an experience
I am sure you have looked into the aspects of minding minors - everythinig from CRB checks to insurance
You photo of you kissing a guy witht he word punk is not exactly going to appeal to many people with 8 yr olds - it's a bit unprofessional given your market segment
AirBnB hosts can embed links into messages once a bookinig has been made, but not before.
Lots of hosts provide folders of iniformation for their guests - including kids
Trusting your 8 year old to an unknown adult sounds risky - what about a sliightly higher age bracket?
I am guessing that most AirBnB visitors to London are adults on weekend breaks not longer family stays - but I may be wrong on that point.
Good luck