The information on here and at escort.cz should give you all the information you need. Most clubs are ok and worth a visit and prices for 1 hour in a room very from 2400czk to 4500czk.
If your looking for a cabaret style place with lots of girls (but many non Cz) head to Darling. It serves the purpose for tourists but is probabally the most expensive club in Prague
K5 is very laid back, you can watch the girls on the pole (usually 30-40 girls), relax in the 2 bars, have food and you will not be approached by any girl, only the managers will speak to you about what you require, again a little expensive but a unique experience.
Sweet Paradise is my current favourite, no shows but young Cz girls, usually 12-15 girls, you can relax here but its a small club and once you pick a girl they usually encourage you to head to a room or go on escort... probabally the best prices in Prague at the moment
PD and Extasy offer a similar style club but less girls, PD has recentely refurbished and is still getting back on its feet, again good young Cz girls, good price but not as many girls
AAA very small club but quite relaxed and no pressure, unfortunately only around 6 girls each night
Lotos is improving but a pit of a pain to get to, especially for a new visitor to the city.
FKK seems to be a bit poor at the moment so cannot comment too much.
Wenceslas Square clubs such as Atlas, Desire..... are all aimed at tourists, i personally hate these clubs, maybe somebody else can give better comments.
As far as hotels go, most hotels can not stop you bringing girls back (since when do you ever sign a disclaimer to say you wont) the only issue is for overnights as you will have paid for single, double room... to bring a guest back to the hotel bar or your room is no business of the hotel, Be bold and if security stop you, tell them politely to take a walk...... demand to speak to the manager if they ask for money, that usually stops any problems, Yes i know we dont like to bring attention to ourselves or what we are doing but lets face it, its your business. Occasionally reception might want to sign the girl in, but again this is no problem.
Hope this helps and enjoy your trip