U're welcome.
The best night clubs in Arequipa are: "Queens" this is in Ejército avenue, between (a half way) the Grau Bridge and the Saga Falabella Mall, the fee is 25 or 30 soles. I haven't go yet, cause with that cost I can enter to Scarlet Night Club in Lima, and in Queens this is just 25 girls, they are the cutest (i guess), the drinks to her are 50 soles, and for sex u need to pay 150 soles to go with the girl to an Hotel (there isn't sex inside), and since 250 to 400 soles to have sex. This data I have reading the spanish thread.
http://perutops.com/foro-relax/f287/local-queens-41182/ the neighborhood is safe (but u've to be always careful)
The next better is Night Club "Africa", I go to it, here are girls even from the "Queens." This is in Mariscal Castilla Avenue, (near to Venezuela Avenue Bypass)the neighborhood is a bit dangerous, so I suggest that u dress in a simple way. The fee is 5 soles, the most of girls come from cheap Lima night clubs (A sol la Barra). They almost don't have sex but prefer drinks, so I guess that it is your place. A Jar of Beer (the word i think is not "jar" It isn't? I mean this jas the equivalent of 5 or 6 glasses of bear) The last time i knew a girl that was almost "Miss Perutops," her name was María Belén and she was so sweet when i invite her a drink that wow, I almost lose may head

. Sex is between 150 to 350 soles inside the club.
The third best is the "Amanecer" Night Club, his is next to "Africa", with the same fee (5 soles) before was the better but now it is just a dangerous cantina.
The last I coud recommend u is the "Kan Kan" Night Club.
Warning: this is in Jesús Avenue (from "Africa" night club just a pair of blocks crossing the bypass), the place inside and outside is
dangerous. Please, be careful, the drinks are cheaper, 30 soles. But even u could see two or three nice girls (there are 30 or 40 girls) I suggest u Patty. There are two patties, this one, although she's not a cutie, is a vampire, the other... well, bad luck. Sex is 80 to 120 soles inside the club.
See, the night clubs in Arequipa r simpler than those of Lima. Just strip tease, no shows, personally i prefer "Africa."
The department pros ask since 50 soles to 150 or 200 soles. The girls level is lower than Lima, in facts the same girl ask the half in Lima (if she has a price of 60 soles in Lima here in Arequipa she's going to want 120 or 150 soles) They usually lie about their aspect, i.e. in the newspaper they claim to be from Brazil, u call to the cell phone and the voice is from a peruvian girl...
In a night club u can see, and u can choose, but calling u have to have good luck, even i'd say very, but very, luck. sorry 4 the english

Regards.
Post Data: I have no experience with saunas in Arequipa, please, ask to a brother in the forum with more pertinent data. I just know little peace of information.
Update:
I went to Queens. There was fifteen or twenty girls (i was a bit late) all of them was since average to 7. I suppose that earlier were the cutest. The best hour to go to Queens, accord to a miss, is eleven pm or midnight. In Africa the best hour is past midnight.