The Atlas Hotel is spotlessly clean. It is situated close to the metros reed line, which takes you straight to central Tehran (the Bazaar), northern Tehran or to the airport (watch out though. It’s a long journey to the airport by metro. Only few trains go all the way). The restaurant at the hotel serves very good food. The rooms are quiet and you can rest in the garden. Our room had a small balcony.
We stayed for 3 nights and were absolutely satisfied.