There are a lot of questions that need to be answered prior to giving a directional answer for computer systems in hotels. There are different systems for different size properties and applications. This will change the $$$ drastically. If you could answer the questions below I can give better direction.
Are you looking for a Property Management System to run only rooms/reservations/accounting operations.
Size of Property- number of rooms
Amenities- is it full service with food and beverage and banquet operations- if yes have you selected a F&B operational system
