Ottawa has draconian restrictions with respect to short term rentals. You will want to read up on that bylaw to start. 
Here is a boot strap seminar I did for REIN which is a quick start guide: https://aliferousacademy.com/str-mtr-rentals-rein/

here too is an article to read to reduce the risk of having a STR guest claim tenancy:  https://aliferousacademy.com/short-term-rentals-vs-the-residential-tenancies-act-in-ontario/

and finally an article on the differences between STR, MTR, and LTR: https://aliferousacademy.com/understanding-residential-short-term-medium-term-and-long-term-rentals/