For ~150 for two and 'feels special', my move is lunch sets at higher-end places, same kitchen, half the dinner price. Many atas restaurants do a set lunch that's genuinely great value and you can dress up for it. Other angles: 1) look at hotel restaurants doing weekday promotions, 2) 1-for-1 deals on the dining apps/bank cards (this stretches 150 a long way), 3) skip the fancy district markup, some incredible modern-Asian places in quieter areas cost less. Tip that worked for us: book a place with a view or private-ish table so the setting does the 'special' work, then order 2 mains + 1 shared starter + share dessert instead of full courses each. We had an amazing anniversary this way and stayed under budget. Food over frills.