I’ve booked a hotel via them once, had issues at the property who said my contract was with third-party and would not do anything to help me.
It then took me weeks and weeks and many messages to try and get the matter resolved. Even then I only got a voucher and not a refund for a miss sold product.
I gave up and promised I would never booked for them again. And, years later – haven’t.
you need to weigh up the value of the saving against any likely difficulties that could arise.