No offence mate, but yeah, you dodged a bullet.
If you want some general advice, here it is;
AVOID;
Romanians
Girls offering bareback services
Profiles on AW with hidden feedback
Offers that look too good to be true
Vivastreet
The single most important one of these is bareback. It's inevitable that the girl will have an STD of some kind, and not all of these are avoidable by wearing a condom. Hepatitis B for example, can be caught through giving oral sex to a working girl.
Before every punt, check on here for information about the girl, if there isn't any, and she has few reviews on AW, avoid her. AW reviews are almost always fake.
I didn't mean to be rude pal, but booking a hooker advertising bareback who looks like she already has AIDS and is covered in bruises is fairly obviously not a sensible thing to do....but fair play for bringing it to other people's attention.