Stayed at this hotel as it was convenient to the business meeting I attended.

Pros:
Reception staff very helpful and pleasant greeting on arrival
Breakfast was ok but not brilliant
Breakfast staff very attentive
Price < 100 Euros per night
Room (16) was quiet as it was at the back of the hotel
Great location for tourists
Nearby restaurants of all standards (McDonalds upwards) are all within 10 mins walk.

As it was December, didn't see the roof garden everyone had mentioned

Cons
Small room (#16)
Bed was not long enough. I am only 1.9m tall, but due to the metal framed bed, it seemed too small. The matress was also nicely worn as it had a nice well in it. Good job I don't have a bad back
Shower attachment was broken, so had to hold the shower head in my hand
Tiles in the backroom broken and the wash basin taps needed 2-3 turns to get any water out.
Spurious hairs (not mine) in various parts of the bathroom (yuk)
Bar closed, as they had no barman on both nights

Overall it was only "ok". I would not go back, even if it was cheap. If you need a budget hotel for doing the tourist spots, then it should be fine.

We stayed at Hotel Pace Venezia for 4 nights. We are a mature couple who like to explore on foot, getting the real flavour of a city, its people and culture so we tend to research the location where we wish to stay thoroughly. We describe ourselves as backpackers at heart who have matured to enjoy reasonably comfortable accommodation. We chose Pace Venezia because it is conveniently located in the old city (Colosseum, Forum, Campodoglio, Vittorio Emanuelle monument etc) within easy walking distance of reasonable quality, low cost restaurants (if there is such a thing in Rome) and a short walk to Fontana de Trevi, Spanish Steps and open top bus routes.

The hotel staff were always helpful and we enjoyed the rooftop terrace and breakfast in the breakfast room. We always request a quiet room and they obliged (the front is noisy as the road is very busy). The room was comfortable, bathroom was clean, a fridge in the room and air conditioned. The room was serviced daily and whilst our chosen price range does not provide 5 star sparkle, the hotel was clean and comfortable with a good shower. We will return to Pace Venezia without hesitation.

Me and my boyfriend stayed here for my 21st birthday in July and had the most fantastic experience!

The room was a pleasant suprise after some of the reviews we had read and we were very happy. It was clean and to a very high standard, with air conditioning that was very much appreciated. I must say that the rooms were noisy through the night but being in the centre of a city this really should be expected.
Breakfast was also fantastic, we looked forward to it every morning and were never let down!

I must say though beside the fab location the best selling point of the hotel is the roof terrace...amazing! It also turned out to be the spot where i got engaged!

We had an amazing week in Rome and the hotel very much added to this experience..brilliant!

We stayed in Rome for 5 nights. We wanted a hotel nearby the old center of Rome. We stayed in room 84 on the front side of the hotel on the fifth floor.

We had a spacious room with 4 beds, a big bathroom and a fantastic airco (>38 °C outside). We had a little terrace (for which it was too hot to use).

Breakfast was more than OK.
Service was very good.

Housekeeping was more than OK.

Roof terrace view is worth a million !!!

Some minor points :
On Saturday the hotel seemed completely full and the available staff (we called him "Antonio" :-)) could not manage the pressure. The other waitress (who was back on Sunday) could do it easely.
The same day housekeeping forgot to clean our room. Reception called someone to do it in the evening ... an Italian man came up with clean sheets and towels but did not know where to start (Italian men probably are not allowed to do something in the household :-)).
When I requested a Espresso in the evening they told me that the bar was not available in the summer season ... a pitty ... we could have enjoyed the coffee on the roof.

As you are not allowed to drive in the city during the day we parked our car in the ParkSi parking at the Villa Borghese. The last nigth we left it on the street ... Rome is a very safe city.

We've peeked in other rooms and they looked less spacious and had a terrible view. So if you stay ... ask for a room on the sixth floor or a room on the front side of the building on the fifth floor. The corner rooms (eg. 84) are the largest.

Our room and our stay are absolutely worth 3 or 4 stars.
The view from the roof terrace upgrades it to at least "****".

We reccommend this hotel !