I built a simple tool to download all their data a few month ago (https://dogedownloadtool.pages.dev/). It uses their API and creates a CSV file for the user. It's interesting to do some data analysis with it.
Author here. I've used React Table for this, which has like 20k+ stars on Github.
It's slow.
Imagine you want to edit a cell in a spreadsheet with 40k rows. You MUST create a new array, otherwise React won't update the DOM.
I'm careful with my login. I used my Google account with two-factor authentication to log in on booking. I never signed through one of their web pages. I also only use HTTPS.
It is a small independent hotel, not a chain so it seems a lot of work just for a review.