Thanks a lot Nicolas, I adore Budapest so this is a welcome IHG alternative in the city.
Unfortunately your link does not work (generates a 404 error) but while googling it turns out Verno House is an already existing hotel (
https://vernohouse.com/en/home/), freely bookable at present, this is where the images also come from. I am wondering then whether IHG would simply franchise it or do some changes ... Weirdly enough, unless I am wrong, I have stayed in the same establishment a couple of years ago when it was an Iberostar Grand and it was truly amazing, so I am having high hopes.