É turística amigável e eu sempre achei seguro.
Com precauções óbvias que um turista precisa levar em quase toda parte. Não há nada intrinsecamente inseguro nisso. Aqui está um excelente conselho:
British nationals made over 1.7 million visits to Turkey in 2016. Most visits are trouble free. Be alert to your surroundings and remain vigilant in crowded places popular with foreign nationals, including during festival periods.
The situation has calmed following an attempted coup on 15 to 16 July 2016. But the security environment remains potentially volatile and a state of emergency is in place. See Political Situation
In some busy areas, especially Istanbul, the Turkish authorities are stopping members of the public to conduct ID checks. There’s also a larger than usual number of police checkpoints on main roads across Turkey. You should co-operate with officials conducting checks, and keep your passport and a printed copy of your e-visa or your residence permit with you at all times.
To start: is it safe to visit Istanbul at the moment? Is the city tourist-friendly?
Sim, nunca me senti ameaçado / assustado ou em perigo em Istambul.
2nd: Between July and September, when's the best time?
Não há muito a separar nesse curto período, mas julho pode ser um pouco quente demais.
3rd: Any advice?
Não perca as Dondurma caras!