Exceptional

Liked: Great host, friendly and great breakfasts

Superb

Liked: Excellent breakfasts.

A must do

Liked: Superb location, just a short walk to the Shaw conference center and downtown. Spacey and comfy room, very clean. Amazing breakfasts. Very good value for money.
Disliked: Nothing

Exceptional

Very clean and comfortable room....

Quaint and lovely B&B

Liked: Location is very close (walking distance) to the very center of Ottawa. The house is kept super clean (guests are asked to remove their shoes). It's away enough from touristy areas, so no noise (I'm a light sleeper and had no issues). Quiet hours are observed by guests. And the owner lives in the same building.Breakfast is provided but see note below on details.
Disliked: Although breakfast is provided, everybody eats the same prepared meal. In other words, there are no options to choose from. That's a limitation if you are not particularly eager to eat waffles, pancakes, etc. No meats as far as I could tell. Also, it was a surprise that breakfast is served between 8-8:30am (no hot breakfast after 8:30am).Keep in mind that you absolutely need to pack warm socks or slippers as the floor feels like ice especially in winter time (from bathroom tiles to kitchen linoleum).

Exceptional

I had a great stay...

Liked: This B&B was great. The location is excellent! It's very walkable to busses, trains, the UOttawa campus, grocery stores, restaurants and bars, and main attractions like the parliament and Byward Market. Vittorio is a very attentive host, making excellent vegetarian breakfasts every morning. I booked through booking.com and he always replied to messages quickly. The house is beautiful, with a lovely main floor and four bedrooms upstairs. My room had a private bathroom and lots of space.
Disliked: The only inconvenience I experienced was being cold quite often. The rooms don't have thermostats, and the hallway was kept at 19°C which was chilly. The water in the shower didn't get fully hot either, only warm, so I couldn't warm up that way.

Highly recommended

Liked: We spent three nights in the Century House BnB in downtown Ottawa. The property is located within walking distance to the parliament buildings and the other main attractions. It was very quiet. Inside the home was immaculate. Incredibly clean. The owner Vittorio was amazing. The breakfasts served were delicious! There was safe, free parking for our car.Vittorio is an exceptionally considerate host. We highly recommend you stay at the Century House Bed and Breakfast when visiting Ottawa. You'll be most pleased.
Disliked: one or two blocks near the B&B are a bit edgy (as in all N. American downtowns) but walking around those blocks you won't see anything and will feel safe.