We booked the rooms at the front...
We booked the rooms at the front of the resort, and while they were large and clean, they were quite old and rundown. We were upgraded to the new wing which was very nice, modern and comfortable. It is definitely worth the small amount extra.
The service was great, breakfast was fantastic, and other meals really nice and reasonably priced - there was little need to eat anywhere else!
Location in Lamai was perfect - right on the beach and close to shopping, bars and clubs. Its a fair way from Chaweng, and much quieter, which suited us.
I'd definitely go back to Weekender, and recommend others stay there - just make sure you stay in the new wing or beachfron bungalows!