We build AI concierges, booking-enquiry automation and high-end websites for hotels, resorts and longevity properties. Fixed price, live in 14 days, built by a team that develops and operates hospitality assets itself.
Works with the systems your property already runs
Everything below runs in production. The ETERRA projects are our own group's assets — we are the developer, not a vendor looking in from outside.
A complete boutique-resort site with suites, spa, dining and enquiry form, plus “Aurelia”: an AI concierge that answers availability, spa and transfer questions, upsells the right extra and captures the booking enquiry — in English, German or Spanish, day and night.
Fictional property, real technology. Your version is built on your rooms, rates and policies.
Investor and partner site for a physician-led longevity clinic on a 3.4-hectare site near Palma, operated under the Santani brand. Gallery, milestones, valuation and document room behind an access gate — the digital front door for an €81 m development.
Confidential investment preview for a lakeside hotel on the Tegernsee. Full-screen film, invitation-only access and a structured offer flow for qualifying capital partners.
Investor preview for a château estate outside Bordeaux: property, hospitality concept and offer, presented in the same access-gated system as the other ETERRA assets.
Group-level one-pager for the platform that connects clinics, resorts and guest data: the strategic layer behind the individual properties, and the reason our hospitality AI is built for repeat guests, not one-off bookings.
Answers rooms, rates, spa, transfers and policies on your site, WhatsApp and email — 24/7, in your guest's language — and hands a qualified enquiry to your team.
Follow-up on abandoned enquiries, quote reminders and OTA-to-direct nudges, timed and personalised automatically.
Post-stay review requests, AI-drafted replies to every review in your tone, and alerts when sentiment drops.
Pre-arrival messages that sell the suite upgrade, dinner, spa day or transfer — the extras with the best margin.
Fast, search- and AI-optimised website with a booking-enquiry flow built for conversion — like Villa Aurelia, on your brand.
Access-gated portals with documents, KPIs and updates for owners, partners and capital — the system behind the ETERRA assets.
Meisterwerk KI is the AI studio of Wencke Mühlenberg — 35 years in technology, three companies founded in New York, Los Angeles and San Francisco, and today COO & Chief AI Officer of ETERRA AG, a longevity real-estate platform. Her partner Sven Bading has delivered around €2 bn of development including the ELBHafen Magdeburg and the longevity clinic on Mallorca.
So when we build a concierge or a booking flow, we know what a front desk actually deals with at 23:40 on a Saturday.
Wencke Mühlenberg · Founder30 minutes. We look at your enquiry flow, website and guest communication live and show where AI moves revenue first.
Clear scope, timeline and one price. Entry systems from €2,500; most hospitality builds €5,000–25,000.
We build on your rooms, rates and policies, test with your team, and go live. Weekly updates; you own every account.
Optional monthly care: monitoring, tuning, new languages, new upsells — as your season changes.
Send us your website. Within 48 hours you get a clickable demo of your own concierge — no cost, no obligation.
Projects typically start at €2,500. Most hospitality systems are between €5,000 and €25,000, fixed price.