We arrived on Phu Quoc pre-booked at The Sea Star Resort...luckily we did not pay in advance, as the price we received per night via internet was $90USD a night...which is crazy for what you get there...we negotiated down to $60 a night, but they told us the rate would go up to $70 a night on October 1st. We only stayed there one night (as it was a torrential rain storm from a Typhoon), and walked down the beach the next morning to see if anything else was available.
We negotiated one of the rooms at Sasco Blue Lagoon (I believe it was a standard with 2 beds)...which was much better than Sea Star's prices. I thought it was great for the price. We are the only people who swam in the pool, and it was a nice pool. The grounds were immaculate...beautiful gardens and trees. It was probably the only stretch of beach that was cleaned daily (we walked up and down the beach from Sea Star to the end multiple times, and it was pretty dirty, but Blue Lagoon had a clean beach). The rooms were nice, though our room did have a hint of cigarette smoke smell, but it was not bad (but worth asking for a non-smoking room when you book). Breakfast was included for all of us 2 adults and 2 kids under 5..which was nice (since Sea Star charged us for our 4 year old every day for breakfast). It was a vietnamese breakfast, but they did have fruit, and a few types of bread. Overall I thought it was good for the money, but not as pricey as some of the other high ends resorts, but much better than some of the lower end resorts. Service was ok, we had to ask for things several times...and they didn't have any baby cots (even though they advertised that they do) but the grounds and pool made up for this lack of service. Something to note is that the waves were incredibly high (I am not sure if it was the Typhoon that was several hundred miles north of Phu Quoc), or if year round they have large waves...there was too big of a rip tide for our little girls to go into the ocean the entire time we were there (in fact it dunked my husband pretty hard when he went into it), so it is also a good thing we stayed at the Blue Lagoon for the pool.
I recommend renting motorcycles and driving around the island (I think we paid about $16USD for an entire day to rent one bike)...be prepared to ride through a lot of dirt roads though, since only part of Phu Quoc is paved (but that added more fun to the ride). There is also a good Greek restaurant near the hotel we liked, and a Pizza place (there are 2, but the better one is closer to Sasco Blue Lagoon)...skip the Vietnamese Cuisine restaurant near the hotel...we love Vietnamese food, but everything we ordered there was not very good (it is actually called Vietnamese Cuisine).
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC