Over the past several weeks, I've been building and hardening a complete booking automation system for a luxury vacation rental — Intervale Mountain Lodge, a 10-bedroom mountain retreat in New Hampshire. Sharing the full scope because I think the unglamorous parts are the actual story. What it replaced: Manual phone screening, hand-calculated quotes, texted door codes one guest at a time, no real visibility into what dates were actually available. What's live now: 🔹 Real-time pricing engine (Supabase) — server-side calculation of nightly rates, fees, and taxes, returned as a locked, tamper-proof quote 🔹 Airbnb-style admin pricing calendar — the owner can set per-date rates, block dates, and adjust global defaults from a password-protected dashboard, syncing instantly to the guest-facing site 🔹 Two-way Airbnb calendar sync to eliminate double bookings 🔹 Multi-step guest qualification form, feeding a structured inquiry straight into the CRM (GoHighLevel) 🔹 Password-protected guest portal — door codes, WiFi, house rules — served securely per booking, with rate-limited login and unique per-booking passwords 🔹 Full review system — guest submission funnel, admin moderation (approve/reject/archive), and a public reviews page blending direct guest reviews with synced Airbnb reviews 🔹 Security hardening pass — Row-Level Security on every table, admin-authenticated endpoints, credential rotation, and a full frontend secrets audit 🔹 Cross-team integration debugging — resolved multiple production issues surfaced by the automation team's live n8n workflows: a 500 error from an unhandled edge case, a field-naming mismatch between systems, and a data-mapping gap between the website and CRM contact records 🔹 Architecture documentation — when platform-stability concerns came up around external integrations vs. native CRM features, documented exactly which parts of the system are external, why, and what the actual upgrade risk is (spoiler: one integration point, clearly isolated)