The situation.
Every month, more than three hundred long-stay guest invoices needed to be generated manually across forty European hotel properties. Each one took over two hours to prepare: room rates calculated across full stays, parking charges added, breakfasts itemised, additional services reconciled, PDFs generated, German tax compliance maintained throughout.
Over a hundred staff hours were being consumed every month on what was, by any honest measure, repetitive administrative work. Payment tracking was chaotic across multiple billing cycles. Front desk teams were buried in spreadsheets when they should have been with guests. Processes were inconsistent across properties.
A hotel group operating at this scale cannot afford to be losing 100+ hours a month to admin that should not need a human at all.
The approach.
The brief was clear: the existing billing workflow was not slow because of one bottleneck. It was slow because the entire process was being executed by people doing what software should be doing. The solution had to reimagine the workflow end-to-end, not just speed up the existing one.
The approach: a self-running monthly cycle that detected eligible guests, calculated charges from the property management system directly, found verified guest contact details across multiple data sources, sent professionally formatted invoices automatically, and routed anything ambiguous to a human in seconds rather than hours.
The work.
A four-stage workflow built on n8n with direct Apaleo property management system integration:
Automated guest detection. Daily scan of all reservations across forty properties, automatically identifying guests with stays of thirty days or more and outstanding balances. Scheduled triggers, code functions, batch processing.
Smart charge calculation. The system retrieves each guest's folio, calculates room rates against nights stayed, adds parking, breakfast, and additional services. Loop-inside-loop architecture handles each guest's specific service profile individually.
Email intelligence layer. The system searches across booking platforms, reservation systems, and guest profiles to find verified email addresses. Where an email is found, the guest receives a professionally formatted, German-tax-compliant invoice with payment link in under thirty seconds. Where no email is found, front desk staff are notified immediately with all details for manual follow-up.
Compliance documentation. Every transaction is logged automatically into Google Sheets: payment IDs, dates, reservation details, guest information. Full German tax documentation maintained without human intervention.
The outcomes.
Beyond the headline numbers, two things matter. First, billing now runs five days ahead of where it used to, which dramatically improved cash flow predictability for the group. Second, German tax compliance is now fully automated rather than depending on individual staff vigilance. The risk of human error has been engineered out.
The front desk teams across forty properties have stopped spending their best hours on spreadsheets. They are with guests instead.