chatlyn review: a Viennese case for keeping guest data close to home

When a new European entrant appears in hotel communication software, I approach it with equal parts interest and scepticism. Interest because we need more EU-headquartered options. Scepticism because “European” and “privacy-first” are easy to claim and harder to deliver. I’ve seen enough startups wave a GDPR badge while quietly routing data through American sub-processors.

chatlyn is Austrian. Founded in Vienna in late 2022 by Nicolas Vorsteher, who previously co-founded Pre Screen, an HR software company acquired by XING in 2017. That exit matters when assessing a young company’s leadership: Vorsteher has built, scaled, and sold enterprise software before. This isn’t a first-time founder learning in public. I wanted to know whether the privacy credentials are substance or decoration.

Jurisdiction and data handling

Let’s start where I always start. chatlyn is incorporated in Austria and their infrastructure sits within the EU. When I requested specifics, they confirmed EU-hosted cloud infrastructure. But here’s what bothers me: which EU data centre? Which provider? These details are not publicly documented anywhere I could find. I asked, and the answers were vague. For a company that leads with “privacy-first” positioning, this is a gap. I want to see a published page stating the provider, the country, and the certifications. Their data processing agreement names sub-processors and includes retention periods. Not exceptional detail, but adequate, and better than many tools I’ve reviewed.

Being Austrian matters. Austria has one of the more active data protection authorities in Europe (the DSB issued the original Schrems II enforcement decision against Google Analytics). A company headquartered there operates under direct oversight from regulators who take enforcement seriously. This isn’t a theoretical point. It shapes how a company builds its product.

Their GDPR posture is sound. Consent flows distinguish correctly between transactional and marketing messages. The WhatsApp integration handles opt-in properly rather than treating every phone number as fair game. I tested the data export and deletion functions (every guest has a right to both) and they worked without friction. These are basics, but basics that plenty of larger companies still get wrong.

One area I’d push on: their privacy documentation could be more thorough. The information is correct but sparse. A published sub-processor list with update notifications would bring them in line with best practice. I mentioned this to their team and they were receptive, which counts for something.

The messaging platform in practice

chatlyn unifies WhatsApp, webchat, email, and SMS into a single inbox, and they’ve added something I haven’t seen elsewhere: integrated messaging for both Airbnb and Booking.com alongside these traditional channels. They’re reportedly the only platform that pulls guest messages from both OTA channels into the same inbox. For hotels juggling multiple distribution channels (which is most of us), that’s a practical advantage worth noting. Messages arrive promptly, threading is logical, and switching between channels doesn’t break the conversation flow. I’ve used this across a three-week trial period and the inbox held up well under real hotel conditions.

The WhatsApp Business API integration is their strongest channel. Setup was straightforward (about an hour with their support) and the connection is stable. For European hotels, WhatsApp is increasingly the channel guests prefer, particularly in the DACH region and Southern Europe. chatlyn handles it well: templates for pre-arrival messages, automated responses to common questions, media sharing. It works as you’d expect it to.

Their AI assistant, chatlyn AI, handles routine queries with reasonable competence. Check-in times, Wi-Fi passwords, directions, restaurant hours. It gets these right consistently. Where it struggles is with more nuanced or context-dependent requests. A guest asking for a dinner recommendation “somewhere quiet, not too expensive, within walking distance” will get a generic response rather than the kind of contextual suggestion that Akia’s AI manages. The gap isn’t embarrassing, but it’s noticeable.

What did bother me: chatlyn’s marketing says the AI “leverages OpenAI’s advanced technology.” So their chatbot runs on OpenAI. For a company that positions itself as privacy-first and Austrian, this is a contradiction I can’t ignore. Guest messages processed by the AI pass through OpenAI’s servers in the US. The Austrian jurisdiction, the EU hosting, the GDPR posture, all of that applies to chatlyn’s own infrastructure, but the moment the AI handles a guest query, the data takes a trip to America. I raised this with their team. They didn’t dispute it, but they didn’t have a clear answer for how this fits their privacy-first positioning either.

The webchat widget is clean and customisable. Nothing that made me pause in admiration, but nothing that made me wince either. It loads quickly and doesn’t interfere with page performance, which puts it ahead of several competitors I’ve tested.

Where chatlyn is still growing

chatlyn was founded in late 2022. That’s young for enterprise software, and the youth shows in places. The picture has changed since early reviews, though. In June 2025, they raised EUR 8M in a Series A led by Smedvig Ventures out of London, bringing total funding to about $9.3M. They now serve over 1,000 properties across 30 countries, with names like St. Regis Mauritius, InterContinental Vienna, and Le Grand Bellevue Gstaad on the client list. They also won the World Travel Awards for Best Hospitality Chatbot Solutions Provider in 2024. These are credibility signals that didn’t exist a year ago.

The feature set is expanding but not yet complete. Reporting, for instance, gives you conversation volumes and response times but lacks the depth you’d want for operational decisions. I couldn’t easily answer questions like “which query types are our staff spending the most time on?” or “what percentage of AI-handled conversations needed human follow-up?” These aren’t exotic requirements.

Documentation is thin. The help centre covers the basics but doesn’t go deep on configuration or edge cases. When I ran into an issue with our PMS connection, the answer wasn’t in any article. I had to contact support. They were helpful, though response times varied. On one occasion I waited most of a working day for a reply. For a small team this is understandable. For a hotel with a live guest issue, it’s a problem.

The campaign and segmentation tools are basic compared to what Bookboost offers. You can send pre-arrival messages and post-stay follow-ups, but the targeting options are limited. If guest communication segmentation is a priority for you, chatlyn isn’t there yet.

One thing that gives me pause: despite 1,000+ properties, I couldn’t find a single hotelier willing to publicly recommend chatlyn. I asked in my network, checked online, looked for case studies with real names. Nothing. For a platform of this size, the absence of anyone vouching for it publicly is unusual. It’s not damning on its own, but it’s a transparency gap I’d want to see closed. If the product works as well as the client list suggests, where are the customers talking about it?

A reasonable European choice

chatlyn does the important things correctly. EU jurisdiction, proper data handling, a functional omnichannel inbox, decent WhatsApp integration, and pricing that’s at least somewhat transparent. Their published tiers run from EUR 61/month (Light) through EUR 161/month (Plus) to EUR 311/month (Advanced). Not the cheapest option in the category, but not opaque either, and I appreciate being able to see the numbers without booking a demo. For a European hotel that wants to keep guest communication data within EU borders, it’s a credible option.

It’s not the most polished tool I’ve reviewed. It’s not the most capable. But it’s built on the right principles, in the right jurisdiction, and the trajectory (Series A funding, 1,000+ properties, recognisable hotel brands) suggests staying power. I’ll be watching where they are in eighteen months.