03.5 Development
Booking &payments.
01 / 04A calendar that is always right, everywhere you sell.
02 / 04Two guests want the same dates. Only one can have them.
03 / 04The dates are held while they pay: deposit, card or IRIS.
04 / 04Then every channel updates itself. No double bookings.
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What it is
Sell your time and space without the phone ringing.
A booking system lets customers see real availability, choose a slot or dates, pay and get confirmation, without a call or an email chain. For rentals, tours, appointments, classes and events, it is the difference between a website and a business that runs at night.
The hard parts are not the calendar. They are the rules behind it: two people trying to book the same dates, holds that expire, deposits and balances, cancellations and refunds, and keeping your own site in sync with Airbnb, Booking.com or GetYourGuide so you never sell the same slot twice.
We build booking flows on top of your website or as a standalone app, with payments connected and your team's admin in mind.
Rules, not just dates
A booking system is your business rules.
Seasons, minimum stays, discounts, deposits and balances: a template plugin covers some of them. Yours probably has a few of its own. Try picking dates in May and July.
Click a check-in day, then a check-out day.
Payments
The ways your customers actually pay.
Visa, Mastercard, Apple Pay and Google Pay through providers like Stripe or Viva Wallet, with 3-D Secure built in.
Instant account-to-account payments in Greece, usually with lower fees than cards. Customers pay from their banking app.
Cheapest for larger amounts. The booking is held automatically while the transfer arrives, then confirmed.
Take a percentage now and the rest later, with automatic reminders before the balance is due.
Your cancellation policy turned into rules, so refunds are calculated, not negotiated.
Each payment produces the right document, sent to the customer and to myDATA through your invoicing provider.
Checklist
What a booking system has to get right.
- No double bookings. Availability locked for a few minutes while one customer pays.
- Channel sync. Calendars shared with Airbnb, Booking.com or GetYourGuide, both directions.
- Holds that expire. Unpaid reservations release their dates automatically.
- Time zones. Guests booking from abroad see the right times; your staff see local time.
- Reminders. Confirmation, balance due, check-in details and a review request, sent on time.
- An admin that fits. Today's arrivals, blocked dates and manual bookings, on a phone.
- Reconciliation. Every payment matched to a booking, so the books close without detective work.
- Accessible checkout. Usable with a keyboard and a screen reader, as EU accessibility rules expect.
Channel sync
Two ways to stay in sync, and when to pick which.
We recommend based on how many channels you use and how busy your calendar gets.
Calendar sync (iCal)
The simplest way to share availability with Airbnb, Booking.com and others: each platform reads the other's calendar link. It is free and widely supported, but it is not instant; platforms refresh on their own schedule, so a short gap for double bookings remains.
Channel manager
A channel manager connects to the platforms through their APIs and updates availability and prices almost immediately. It costs a monthly fee and is worth it once most of your bookings come from several channels at once.
How we work
Rules first, calendar second.
You get a clear timeline before we start.
Rules
We write down your real rules: seasons, minimum stays, deposits, cancellations, who does what.
Flow
The booking flow designed for mobile, with the fewest steps between choosing and paying.
Build
Calendar, payments, channel sync and admin, tested with real payments in a sandbox.
Go live
We import existing bookings, switch on payments and watch the first weeks closely.
Who it's for
Three kinds of booking businesses.
Villas, apartments, rooms, boats and vehicles, booked by date with deposits.
Time slots, group sizes and seasonal schedules, often sold on marketplaces too.
Clinics, studios and services with staff calendars, reminders and no-shows to reduce.
Related
Bookings touch everything else.
Payments, integrations and the site around them, in-house.
FAQ
Questions, answered.
How do you prevent double bookings?
Dates or slots are locked for a short time while a customer pays, and calendars are synced with other channels. If two people try at once, only the first payment wins and the second is offered alternatives.
Can it sync with Airbnb and Booking.com?
Yes, usually through calendar (iCal) sync or a channel manager, so availability updates on every channel.
Which payment providers do you work with?
Providers that work well in Greece, such as Stripe and Viva Wallet for cards and wallets, plus IRIS and bank transfer. We help you choose based on fees and payout times.
Can we take deposits instead of full payment?
Yes. A percentage at booking and the balance later, with automatic reminders and an optional automatic charge.
Can we manage bookings from our phone?
Yes. The admin is designed for mobile: today's arrivals, blocks, manual bookings and payments.
Should we use a ready-made booking plugin?
If your rules are simple, often yes, and we will configure it well. Custom makes sense when your pricing, availability or workflow do not fit the plugin.
How do refunds work?
Your cancellation policy becomes rules: the system calculates what is refundable and processes it through the payment provider.
How much does a booking system cost?
It depends on the rules, channels and payments involved. After a short call we send a transparent proposal with the cost broken down.
Let the calendar work at night.
Tell us what you rent, run or schedule. One real reply within 24 hours.