Needed: An apartment in Cairo

We would like to purchase an apartment in Cairo, in a central location: Downtown (Abdeen, Elfalaki ...), el Dokki, el Behoos, el Manial, el Rodah, Zamalek. It should be:

- at least 100 qm
- not on a main street!
- airy and sunny
- balcony
- 2 bathrooms
- preferred: old style building (well maintained and clean)

I wonder if anyone can help us find such an apartment.

Besides, I would like to get information about whether there is some good Egyptian real estate websites, how I can check the "accuracy" of the asked price and the "legal status" of the apartment.

Do you have a recommendation for real estate agencies?

Many thanks for your help and Ramadan Kareem

Howaida Shahin