Sure, streetwalkers come out at night in their designated area, but studios and indies work as well during the day - well, maybe not at 8AM. So, you might want to check Extasis, Bodyplay or New Relax Sauna, or just one of the main directories. Facegirl.ch has the largest choice, but you can always check Sex4U.ch, XDiva.ch or Bemygirl.ch.
Can't give you any recommendation right now, sorry; though, looking at the current offer, I'd advise you to avoid "An(n)ia", currently at Extasis, unless you want a stereotypical Rom experience (covered BJ, no kisses, unenthusiastic and mechanical girl who wants you to end as soon as possible, and will then tell you she's sure you'd like to stay for longer, of course for a price
).
Then, the prices are quite often at 300 francs/hour, which is fine with the few top girls around, but is definitely a rip-off with others. Granted, from what I heard, New Relax is cheaper, but iirc you pay an entry fee and then negotiate with the girl directly. SWs of course will be cheaper as well.
Bottom-line is that the choice is larger in Geneva, and you usually will have a few great ones that are guaranteed to be present; good punting requires a bit more patience, I suppose, in Lausanne, and possibly more trial-and-error.
