Hello Didier,
The "others" node is always required for every level of the tree. Please make sure you are adding others node at each level to form a complete tree.
You should be able to create the hotel campaign with manual CPC bidding strategy and I was able to test it in my environment. In the code snippet shown
here change the
PercentCpc to
ManualCPC with
enhancedCPCenabled field to false and can remove the
cpcBidCeilingMicroAmount as they are not required for
ManualCpc strategy. Please give it a try and let me know if you have any further questions.
If you are still facing any issues please share the entire logs by enabling logging to DEBUG as mentioned
here. You could use reply privately to the author option while sharing the information requested.
Regards,
Sai Teja, Google Ads API Team