We've been coming to Samui for over 10 years, and usually stay at hotels under 2000B/night. We speak Thai, and already know where we want to dine (hint: never eat at the hotel), so I cannot speak to the language or food complaints raised by other guests.
First the bottom line: For the price, this hotel was pretty darn good on balance. The grounds are indeed peaceful: well kept gardens dotted with various species of trees labeled in English and Thai. The resort is in Bo Phut, so the beach is not as busy. It was clean and well maintained. The pool area is small (it's not some Cancun mega resort), but nicely organized, and certainly adequate. The bar, breezy (and overpriced as usual).
The staff are fantastic! Can you imagine having to smile and greet guests _all day_every_day, year in and year out? Well somehow they still manage to make it look genuine at Peace resort, while elsewhere everyone is usually completely jaded. We stayed with a baby and got a crib; housekeeping neatly folded the baby's blankets and arranged the toys strewn about daily. The rooms are decent, not scuffed up. The overall feel of the resort is great: wooden reception, nicely appointed bungalows with a little porch for reading, palm shaded, winding paths lead throughout the gardens. This is a major selling point: it just feels nice to be there. A lot of alternatives have you staying in 4-story concrete buildings, close to the busy main road, or there aren't enough trees, or they're just a little too budget for comfort (people yelling, playing with motor bikes for the first time, whatever).
Paying less than 2k Baht usually means that you'll have to put up with some complications. Here were ours: the shower always oscillated between uncomfortably hot and uncomfortably cold. It just did not work. We stayed for 6 nights. More would have been unpleasant with that shower. We told them. They said we needed to adjust it ever so slightly. We assured them, it was not working properly, and it was not a matter of technique. They sent a parade of folks in to check it out, said they would fix it. It never got fixed. We gave up on that one. The shower area is designed such that water sprays everywhere, and makes the floor by the adjacent sink totally wet. Every time. No bath soap -- just shower gel. It seemed like nice gel actually, not too perfumy, but showering with gel is somewhat of a hassle. Rooms do not have adequate lighting. Everything is kind of dim, and you can't read in bed without fully illuminating the whole bungalow. The phone, not that we really needed to use it, had yellowed from age. Computer cases from the 80's take on a similar hue. The air-con unit: it is the sort that takes 15 minutes for the compressor to engage after turning it on. Imagine getting back to your room, sweaty from carrying a child through the resort, and wanting some nice cool air right away... when you want it most, it does not come on. There's no fan either, no respite. The bungalow is like a sieve, so the room quickly gets up to the outside temp when the compressor cycles off during the night. At night, we found the room temperature to be too warm and too cold around the peaks of the AC cycle. But it was bearable.
No pens are provided. Just a pencil. I like the rustic edge to that, but a pen is cleaner and more practical. We asked a housekeeper for a pen, and she readily gave us one with a smile. It was her personal pen. She probably bought it herself from Tesco. Now, she probably makes the usual 10kB/month. So, in the end we felt bad. There's a kid out front who's job it is to direct traffic. Since we drove, this was fantastic. The main road is busy, and he would get the traffic to stop for a second so we could pull out or cross the street on foot. Unfortunately, the poor dude was given a dark uniform (hot, and hard to see), no safety vest, and his only signalling device was a ping-pong paddle with the word "stop" painted on one side. Perhaps they could pause and upgrade this poor chap? At least his girlfriend comes to keep him company sometimes.
Will we come back? If the price is still low, probably. Although we might explore other options too.