I went to Laos,early December 2006. Arrived by train from Bangkok at Nong Khai,tuk-tuk to the border.$30 for visa and another tuk-tuk to Vientienne. I stayed at the Phonepaseuth Guesthouse,near the fountain,in Vientienne. Think it was $6 a night.Rooms were clean and comfortable.
Nightlife is virtually non-existant,and all the bars closed before midnite. Went to a big hotel called the Lane-Xang for a heavy drinking session one night....3 farangs drinking jack-sprite or vodka-coke,also had filet mignon steak for dinner while there,bought all the staff a drink(about 12 of them).Session started at about 9pm and we left at 3a.m.Total bill for the drinks/meal was 1200 Baht !!
Was approached by a few ladies,hanging out near the fountain.Asking price was 500 Baht for the night.Most were a bit rough (if your a good looker,why stay in Backpacker Heaven,when Thailands not far away?).
I did take one lady back to my guesthouse,no problem at all taking her to my room.Reception just checked the ladies I.D.
Overall,I hated the place,lots of building work going on,especially new pavements,but it was cheap. Three of us went for a `proper` massage,one and half hours oil massage cost $4 for three people(about 46 Baht each).
Left after 3 days and flew upto Chiang Mai instead....best thing I ever did!