I will commission the preparation of a site (skeleton to be freely completed) preferably on a free editor, it can also be from a ready-made template, with an implemented system of reservation of services, which can be freely changed at your own expense.
The reservation system plays a key role. It must necessarily have the ability to add discount codes, one-time events and recurring events, as well as standard entries such as 1h or 2h.
The system is used to operate the sauna.
Example of the system on the sauna: https://saunawisla.pl/produkt/sauna-wisla-rezerwacje-indywidualne/ (please do not suggest too much, here it is a bit simplified from my expectations).
I will ask for a quote with a portfolio and a few sentences about possible solutions :)