I've watched both episodes so far and will watch the rest [I'll watch anything semi-plausible about New York restaurants, Downtown New York, ingénues in New York, etc], but I suspect not many others are watching. To some extent Sweetbitter has the misfortune of being paired with Vida, which is much more dramatic and 'timely', and attracting most of the critical attention. [Though it's Starz, so still not a great deal of attention.] Interestingly, Starz decided to upload the premiere of Vida to YouTube for free viewing, but they seem not to have done for Sweetbitter.
The folks at Eater, however, are watching. One of the reviewers has read the novel [I still haven't done], and the other [Greg Morabito] has actually worked in New York restaurants. Morabito observed that the layout of the show's '22W' does in fact match Union Square Cafe, where Danler worked during this period. The show's FoH adviser worked at Union Square Cafe for eight years.
Some fuss was made over Danler's looks when she got her fairy-tale publishing offer, but I have to admit, watching some publicity for this TV adaption, she can as readily withstand the male gaze as the show's actresses.