Hi! Planning a last-minute trip (I know) to Barcelona - Costa Brava - Marseille - Aix en Provence - Nice in July. Needing to secure lodging quickly in Marseille, possibly Aix-en-Provence (maybe just day trip instead) and Nice. Looking for reasonably-priced, walkable from town center (won't have a car), safe neighborhood and walk there, and A/C (traveling in July).
Thank you for your always thoughtful insights!