Booking calendar
Clear multi-calendar view across all apartments. Drag-and-drop bookings, quick add, day and month views.
Platform for apartment owners
Manage apartments without the chaos.
Booking calendar, Booking.com & Airbnb sync, automated guest messages and financial reports — in a single dashboard. 30 days free, no card required.
No card · 10-minute setup · Support 7 days a week
4.8/5 from 2,100+ reviews
Used by 3,400+ properties
flatbase.app/calendar
Booking panel
April 2026
Booking.com Airbnb Website
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Johnson · Apt. 12
Martin · Apt. 7
Lee · Apt. 3
87%
obłożenie
14
check-iny
+12%
vs. mar.
Nowa rezerwacja
Booking.com · 3 noce
Trusted by property owners across Europe
3,400+
active properties
180,000+
bookings per month
99.98%
service uptime
4.8/5
average rating
Features
Everything a modern host actually needs
From the first booking to year-end tax reports. FlatBase replaces your spreadsheet, chat, calendar and payment tool — all at once.
Channel Manager
Two-way sync with Booking.com, Airbnb and Expedia. No more overbookings — availability updates in real time.
Automated messaging
Templates sent at the right moment — confirmation, check-in, review request. Email and SMS out of the box.
Online payments
Card pre-authorization, deposits, payment links. Integrations with Stripe, Przelewy24 and BLIK.
Reports & analytics
Revenue, occupancy, RevPAR, ADR in one dashboard. CSV and PDF export for your accountant.
Team & roles
Invite cleaners, reception and owners. Everyone sees exactly what they need. Full audit log of every change.
A closer look
Three pillars of FlatBase
Calendar
One view, every booking
Whether a guest comes from Booking.com, Airbnb or your own website — they appear in the same calendar. Channel colors, payment status, notes — all at a glance.
- Multi-property in a single view
- Quick blocks (maintenance, owner stay)
- Offline-first — changes sync when you come back online
KWI 2026
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Channel Manager
Zero overbooking, more revenue
You sell across several channels at once and FlatBase watches availability. As soon as someone books on one channel, the others close within seconds.
- Booking.com, Airbnb, Expedia, Vrbo
- Seasonal pricing and minimum-stay rules
- Your own booking widget (0% commission)
Booking
Airbnb
Expedia
Vrbo
Booking.com → sync 2s ago OK
Airbnb → sync 5s ago OK
Expedia → sync 11s ago OK
Assistant
Communication that runs itself
Set your templates once and forget. FlatBase sends the welcome after booking, the check-in instructions the day before arrival and the review request after checkout — in the guest’s language.
- Automated messages in 10 languages
- WhatsApp and SMS integrations
- Built-in chatbot for common questions
G
Hi, how do I get the Wi-Fi password?
The Wi-Fi is flatbase-guest, password welcome2026. Enjoy!
AI
G
Thanks! And check-in is at 15:00?
AI
How it works
From signup to first booking in 10 minutes
- 01
Create an account
Sign up with email or Google. No credit card, no strings attached.
- 02
Configure your properties
Add apartments, rates and availability. Import existing bookings from iCal or Booking.com.
- 03
Manage from anywhere
Use the browser dashboard or the mobile app. FlatBase handles the rest.
Pricing
Simple plans. No hidden fees.
30 days free on every plan. Cancel anytime.
Starter
For a single apartment or guest room.
— €/mo
- 1 property
- Booking calendar
- 2-channel sync
- Email support
Pro
For professional hosts with multiple properties.
— €/mo
- Up to 5 properties
- Full Channel Manager
- Automated messaging
- Online payments
- Reports & analytics
- Priority support
Business
For companies managing many locations.
— €/mo
- Unlimited properties
- API & webhooks
- Roles & audit log
- 99.95% SLA
- Dedicated account manager
Final pricing will be announced in May 2026. Sign up now to lock in the early-access discount.
Reviews
Hosts who finally get their weekends back
"Before FlatBase I spent half a day every week syncing calendars by hand. Now everything runs itself."
Anna K.
Owner of 4 apartments, Kraków
"We moved off spreadsheets in a week. End-of-month reports used to take two days — now it’s one click."
Michał W.
Manager, 12 apartments, Warsaw
"Overbookings are gone. Literally. Running three channels used to be a nightmare — now it just works."
Katarzyna D.
Host, Tricity
"The app is faster than I expected. Even during check-in rush nothing ever stutters."
Paweł S.
Hostel owner, Wrocław
"Polish-speaking support is rare in this industry. They reply in 10 minutes and actually understand me."
Joanna L.
Host, Zakopane
"Automated messages changed my life. I no longer answer Wi-Fi questions at 11 PM."
Tomasz R.
Owner of 2 apartments, Gdańsk
Frequently asked
Answers before you ask
Can I really test everything free for 30 days?
Yes. You sign up without a credit card and get full Pro-plan features. After 30 days you decide whether to continue.
Can I import data from another system?
Yes. We support iCal, CSV, and direct import from Booking.com and Airbnb. On Business we help you migrate 1-on-1.
Can I cancel anytime?
Of course. Subscriptions are monthly or yearly and you can cancel in one click. You can export all your data to CSV.
Does FlatBase work on mobile?
Yes — the dashboard is fully responsive in the browser, and we ship iOS/Android apps for Pro and Business customers.
How is my data secured?
Data hosted in the EU (Frankfurt), TLS 1.3 encryption, hourly backups, GDPR-compliant. We sign a DPA on request.
Do you have an API?
Yes — REST API and webhooks are available on the Business plan. Public docs at developers.flatbase.pl.
Ready to start?
Join 3,400+ properties that moved from chaos to FlatBase.
No credit card · 10-minute setup