• Hamams
• Walking tours

English is widely-spoken and understood in Constantinople as its profile as a city break destination increases. Nonetheless, it is still common to encounter people who speak only Turkish.
Many females I felt uncomfortable walking around alone due to "lecherous looks" etc., but being a lad, I had no complaints and neither did my two companions (both female) although I was with them all the time.

Similar to many European countries tap water is mostly drinkable, but it may not be healthy depending on where you drink it. Although the tap water itself is clean, many local water tanks are not maintained properly, suggesting one should try to avoid tap water if possible. Locals widely prefer bottled water and the same applies for the restaurants.
Food and drinks are mostly of international standards. Some Turkish foods are known to use a variety of spices which may affect international tourists who may not be accustomed to such ingredients, although most of it is edible for any tongue.
Use common sense when buying certain foods, particularly from street vendors. Delicacies such as "Firin Sutlac" (a kind of rice pudding) can go bad rapidly on a hot day, as can the oysters occasionally for sale on the streets.