I'm taking my gf on a surprise trip to Italy this July and plan to propose in Rome on the first night (Saturday). I know there's been similar posts in the past, which I've read, so I apologize for the repetition in advance, but I'd greatly appreciate any guidance.
We're staying at the St Regis. The plan is to get a car service around sunset that supposedly will take us to dinner, but actually drop us off at a romantic location (I'm thinking Gianicolo, though I'm open to better suggestions) for the proposal, then we get back in the car and it drops off at the restaurant. I've narrowed down the restaurants based on Gambero Rosso to the following: (i) Il Convivio; (ii) Antico Arco; (iii) Vivendo; (iv) other?
I was originally set on Convivio, but then I heard good things about Antico Arco and noticed that it's both cheaper and close to Gianicolo. For Vivendo, I don't believe the food will be as good, but I thought there's a better probability of being treated very well, seated promptly etc. if we stick with the St. Regis (service is critical given the occasion).
For a little more background, I'd like to do a tasting menu under 100 euro pp, classic or modern Italian is fine, fancy decor, but not overly modern/trendy. A place that's good for a celebration and has great service are key. We also like to eat (e.g. don't love tiny portions). We're in our mid 20s and from NYC, if that helps.
Sorry for the long post and I appreciate any assistance.