Cangrejo area is near many restaurants and stores taxi to casco viejo is around 5 US dólar , not because is far, but hot to walk, USA dollar is the currency use, if you like to visit the canal or other places, there are taxi drivers that u can make deals to go. There are a few trouble areas, ask at hotel for info, but no to worry just like any other countries, February is summer in Panama. Siesta check that before you go anywhere, and how safes, here is safe but u have to be careful don’t walk at night alone, don’t wear anything that shows and keep must money and Passport etc at the hotel, make copy and take with you, during the day a walked and after hours took taxis is cheap,