WelcomeTaxi was a great experience.  I was thrilled when my co-worker recommended WelcomeTaxi, especially that the company has English-speaking drivers (very helpful as an expat living in a foreign country).  I had booked the service online and when the company reviewed my reservation before finalizing it, they called me to tell me about a service that was more along what I was looking for and which would cost me a good amount less.  The driver was punctual, and knew exactly where the drop-off point was without having to explain it.  I felt very secure in having WelcomeTaxi drive my family from my place of work back to my apartment the day after they arrived.  I will certainly be using WelcomeTaxi again!