Through research beforehand, I found this little gem of a place the last/and only time I ever went to Pattaya:
Mark Land Hotel Pattaya in Thailand at Exclusive Rates - DirectRooms
VERY big rooms, and a nice rooftop pool. It is technically a hotel, but I met many locals that actually lived in these rooms full time. They are that big. I guess they rented by the month at reasonable rates. But, it is just a testament to the LT comfort they got out of the place I guess.
Great views and pretty good price too. But, it is NOT in the middle of the action (it is about 2 km north of Walking Street), but there is no need to be really. The song teaws (baht buses), will take you up and down to the main areas for a pittance...
Also, unfortunately, there IS a joiner fee. I think it was 500 baht.