Trav
you should be able to meet girls near the hotels, usually after dusk. Also hotels have in house action, visit the massage/barber/beauty shop in the hotel, let them know your room number if you want in room service. You may receive phone calls afetr 10pm or so, these are usually the inhouse girls getting off duty and maybe going freelance.
Also there will be plenty of 'barber shops' in the streets, usually side streets in older buildings, have a look you will 'cotton on' to the action places.
I don't know about spa's but these are best left to visit with a local or it may be rip off time if you are on your own
teltel