I had a feeling that they had gone but I wasn't sure. This means that Loi Khro Road is the only area I know, as mars says it starts with a small soi right outside the Imperial Mae Ping hotel which has a boxing ring in the middle and bars around the outside. Then follow the road up to the canal, more bars there and on the way. Once at the top of the road (by the canal) turn right a few more there and some more across the other side of the canal.
Unfortunately I don't know where the Suriwonges hotel is.