Coffee & Drink in Sanaa
As in the rest of the country, the tap water should be avoided at all costs. Bottled water, both chilled and at room temperature, is readily available and very cheap - as is the normal range of fruit juices and soft drinks.
Nice tea and coffee house is "Friends Kafeteria" in Al-Tahrir area, Mocka Intersection. Here you can involve yourself into interesting conversations with Yemeni men. Also food is available. It looks like this place never closes down.
Near the Shumaila Hari Supermarket you will find the Coffee Trader, a place where you can get an excellent latte or cappuccino at Starbuck's prices and eat a piece of carrot cake while checking your e-mail on their wireless internet hotspot.