True - Rosewood Abu Dhabi is not a landmark hotel, just like the neighbouring Four Seasons- it’s also only a business hotel.
The FS is nicer in the sense that it’s much newer and therefore crisp in appearance.

The two hotels are very different in style, RW quite dark, FS rather bright. To me the RW lobby / lounge is more comfortable, the FS one too open and bright.

The rooms at RW are showing a bit of wear and tear, the FS ones of course not.

Usually both hotels deliver in terms of the service quality!

While PHs don’t get reviewed in this forum, we had an exceptional stay at the PH AUH in one of the villas https://www.flyertalk.com/hotel-revi...cognition-1108

It appears to be the best option from what I can tell.

Ritz and Shangri-la.

Between the two I would also recommend the RC, although it’s interesting how different experiences / opinions can be.
I personally didn’t like the RC at all, far too large, too much walking from one wing to the other, pool doesn’t feel cosy and I find the decor to be lacking class, especially that archway you drive through at the very beginning!