My guidebook (thank you Lonely Planet) didn't indicate that this had long since joined a chain and described this as the city's 'best midrange hotel' - they were wrong! The hotel isn't 'high design' or even minimalist - it is bare. All that said, I had a view of the main plaza & cathedral and the room was clean.
The entrance/lobby is not conducive to a good experience and the staff weren't the most helpful I met in my 5 week stay in Mexico. I ought to have booked-in next door (and will do so next time).
I didn't take advantage of the much-maligned (on this site) hotel breakfast, so can't comment. Had breakfast at Restaurant Lu next door - most enjoyable.