All the facilities of the 3 spas you listed are nice. They are not as grand as the Premier locations, or Flirt Spa on Vic / Elevate, but at times who really needs that excess. A good basis for comparison in terms of facilities, would be a place like Allure. Clean and relaxing. At the Alpha locations and Hush downtown, you can also lounge in an area and have a drink. Walks in possible, but membership helps for booking ahead.
If you like the Flirt or Muse type sensual service / experience, then you will be able to find them in Ottawa but expect upcharges for those level of sensual services (unlike Flirt or Muse). There are some lookers in Ottawa for sure, but on average its probably a bit lower than these spas.
If you like Allure type experience, you might still get hit with upcharges for those services from some in Ottawa. And on average, you are not getting the same level of looks as Allure.
If you go for enhanced services (thar are typically found at places like Premier and Seductions),they are often available here too, but be prepared for the wild west in Ottawa, where the Ottawa upcharges for such services are often much higher... in fact they might even make an attendant at Seduction blush.
You do get a SF2 experience which is a nice touch unique to Ottawa. Something that I have enjoyed with a number of attendants over the years. That being said. if upcharges were discussed by the attendant before the shower, the experience may not always be as sensual as it used to be,