I can confirm it's a nice hotel with proper status recognition.

A few points on my experience:

1.) Booked cheapest room. Didn't receive an upgrade. I arrived fairly early, receiving a complimentary early check-in at 11am. So maybe no better room was ready.

2.) Regarding the room I got... Pros: Top floor; high ceilings; recently renovated; not facing the street. Cons: Somewhat weak WiFi coverage (low signal strength); a bit of noise from the hallways; small bathroom.

3.) Great platinum recognition: Completely free minibar (it had a few Pilsner Urquell ); welcome surprise with cake and fruit (similar to pic from a poster above); drink voucher; early check-in; 30% off all F&B; a number of free bottles of water in addition to the free mini bar.

4.) The quality of the breakfast buffet food is excellent. Particularly the quality of the pastries and cakes was outstanding. Very large selection of fresh juices, cooked-to-order eggs, etc. Only downside: The service from the waitresses serving the coffee was slow.

5.) Nice building. As a previous poster mentioned, Franz Kafka worked there for over a dozen years. It used to be the building of an insurance company.