I haven’t stayed in a Studio Suite at this W but that’s usually a term they use to describe their open plan suite concept which is often essentially a junior suite.

I agree, the pool is nice, but I prefer the more reliable spa experience.

Regarding breakfast, the normal pre pandemic set up was apparently breakfast at either Mr Porter (roof of exchange) or the Duchess. I think this has been restored. Last time I stayed, it was only Mr Porter or room service. For one glorious stay last year, we could get room service breakfast on the bank side with no tray charge or limits on items, until 3pm! And this was an elite benefit - highly impressive.

Edit: yes, this is a hotel that really takes the S part of SNA seriously and is probably one of the best SNA options in Europe - I really admire their approach. All USA hotels put some drivel like a one category upgrade as their top room.