Amazing Hotel.
Excellent Staff, very pleasant check-in at Reception, who provided us with some maps and local recommendations for food, drinks and activities.
Excellent Room. Great air conditioning. Really (really) great. Have the room as cold as you like (important in summer months). Very nice scenic views looking out at the Coast, and the Lighthouse (in the distance). Very quiet. (we were on the 3rd floor, facing the sea).
Excellent Breakfast options. Great selection, very convenient, with both indoor and outdoor/gardening seating.
Excellent location. Nice, scenic walk from the Hôtel St-Julien to La Grande Plage, takes about 10 mins. Plenty of places to stop along the way for a coffee, drink, or something to eat (N.30 Cantine Urbaine, The Miremont, etc.).
Rue Gambetta, Rue des Halles, all very close by.
Lots of nice touches. They will lend you a beach basket/bag, with a beach towel and "beach pillow", and if you like it, you can purchase them at reception.
In Summary, a very professional, friendly, top-quality, boutique hotel, with great amenities, staff, and decor.