That's what we ended up deciding to do: Le Meridien, for surprisingly few Bonvoy points. We may or may not use Uber the following morning, but we'll be able to discuss options in person with the hotel staff. If we do use Uber, we won't be subject to airline, (depending on how well we pack) baggage claim, and customs/immigration delays.

We still have our room at the Semiramis International. Since we booked it as part of our tour package, it's been past the cancellation date for quite a while now. That isn't entirely a bad thing, though: we'll be able to check in when we get there in the morning rather than waiting until 3 pm or whenever.