I have tied all the places which Leila had mentioned ... My favorite is @Noodasia where you can find the richest sushi buffet among all in terms of variety and quantity
As for a tailor, @Meral in Sweifeyeh, would be your best choice, i've been dealing with since 10 years now. Khaled (the tailor) deals very professionally with all types of expensive clothes. There no.: 07 7799 9907