Thanks for your feedbacks, yes of course it is not advisable to keep 250k in a savings account, I also have not written it was the case here 
In the past when we could still fly the Priority Pass was quite useful, but today, well… And the “points” for the bonviva rewards were also not bad with this contract (sometime equivalent to 1-1.5% of your spendings), but the situation changed a lot on the market over the years with new cashback cards & co, so yes, if you still have Bonviva, it’s definitely the time to check your options.