I've asked the hotel and this is their response:
At this time, our hotel operates as an IHG-affiliated but unbranded property. As such, we do offer a welcome amenity for Diamond members, which you can select upon arrival. The options include:
* IHG One Rewards points
* A drink and snack voucher
* Daily hot breakfast for two guests
Please note that starting next year, we will be transitioning to become a Kimpton-branded hotel. With this upcoming change, many aspects of our service and brand standards will evolve, including the specific welcome amenities offered to elite members.
As a result, we are currently unable to guarantee what options will be available at that time.
so the answer is - yes, as of October 2025 they do offer the usual welcome amenities.