The food in Rehan is really good and 'cause of this it's almost always overcrowded, so sometimes it takes some long time to get a waiter, but the kitchen is on top, it gives the orders pretty fast and does a really good job in terms of taste.
I gave it 4 stars because I didn't like the amount of plastic everything there. Tables are plastic, chairs are plastic, too much of it and it didn't feel good.
Nice place; cozy backyard is much more pleasant than the inside. Food is generally fine, although some culinary experiments might be too niche (for example: kebab is okay, bread with the sour cherry sauce is delicious itself, but together they don't go as well as the chef probably thought). At busy hours waiters are clearly overstretched and lack attention. Overall recommended.
Very tasty Lebanese food.
Service is also a good one and they have a great backyard, where you can seat in a cozy atmosphere during Yerevan hot evenings.
Totally recommended.