Since you don't even have an idea about what you'd do with it, the very best idea of all is for you to forget about buying the store.
If and when you have a clear idea and vision of exactly what you want to provide, who will be your best prospects, where you should be located in order to present your offer to your best prospects, then and only then would you be in any position at all to think about a store and whether a particular store would be suitable for your very specific and particular plans.