My thoughts on both places...
Seaside Guesthouse
http://www.pattaya-revealed.com/showthread.php?t=8247
Drunken Duck
http://www.pattaya-revealed.com/showthread.php?t=8277
Both were adequate. Drunken Duck seems to have been spruced up a bit since I stayed. Depends when you're going and how much you want to pay ? Up to you.