For private houses their systems are the same as everywhere else, girls we go come one by one or all at the same time you make your choice. There are usually a fewer woman working in these clubs, just one or two.
Often a drink is offered on arrival. Generally girls speak English, especially Prague, some also speak a little German. No communication problem so. Prices are the same as for escorts.
Most of these private fascilities dont have websites or facebook page . The best way to approach them is to call them by the phone.