When to go
October through April is the cleanest window, with milder walking weather and a real chance of winter wind or rain. July through September is hot, humid, and busy with domestic coastal travel. I build the outdoor archaeology and Qaitbay windows around the weather, then keep the museums ready as a useful fallback.
Hotel logic
Four Seasons Alexandria at San Stefano is the only currently supportable ultra-luxury base, with sea views, suites, security, and resort infrastructure, but it sits east of the historic center and its seasonal beach closes from November through April. Steigenberger Cecil, Le Metropole, and Windsor Palace offer more central heritage atmosphere with greater room, noise, and maintenance variability. The exact base should solve either controlled luxury or downtown immersion, not pretend to deliver both.
Food and reservations
Mohamed Ahmed is the breakfast starting point for foul, taameya, eggs, and pickles. Farag Abo Khaled is the more specific lead for Alexandrian liver, while Malak El Saman gives the quail tradition. For seafood, I care less about the most famous view than clear weighing, current fish turnover, an agreed price, and the right grill or singari preparation.
What I would avoid
I would not attempt Qaitbay, the Bibliotheca, Kom el-Dikka, the catacombs, Montazah, and a long seafood lunch in one Cairo day trip. I also would not sell the Corniche as a pristine Riviera, the modern library as the surviving ancient library, or a heritage hotel as flawless contemporary luxury. Alexandria becomes much better when the expectations are as carefully planned as the route.