We had a mixed experience and would prefer other hotels if we return to Apia.
If you need a quiet place you might want to consider booking another hotel, the street corner Outrigger is located, is very (very!) busy, even during the night.
Breakfast is served (no buffet). When you ask for some more toast with butter and jam, then you get a tiny bit of butter and a teaspoon of jam - it really felt odd, appeared like they ran out of butter and jam.
The pool and garden are nice indeed.
We did not feel that the staff was going above and beyond: Any question or ask "out of the ordinary hotel related", they just shrugged their shoulders.
The 24/7 reception desk sounds good, but when we arrived at the hotel at about 10.30 pm, the receptionist was sleeping on the sofa.
For what they offer I believe they are overpriced. You will find better deals.
Keep in mind: Private restaurants have closed on Sundays!