Before any software discussion: how much of your volume do you want coming through your own channel in two years, and what would have to be true for a guest to book there instead of through an agency. That answer sets the whole scope. It decides how much work goes into the booking experience, whether loyalty and repeat-guest data matter, and whether multi-currency and multilingual are launch requirements or later ones.
Then decide where the operational boundary sits. A reservation system that stops at the confirmation email is cheaper and leaves the coordination with your staff. One that reaches the room board, the kitchen display and the housekeeping list costs more to build and takes work off the floor every day it runs. Both are legitimate; choosing by accident is not.
We work through these in a requirements session before anything is priced, and the answers go into a prototype running on your own rooms, rates and menu. Questions that come up before that conversation are answered on our FAQ page.