Are you planing to open a new nursery in Doha ..if yes in which area..anyways I dont have much experience but ya as i am searching a nursery for my 2 1/2 year old son I can certainly tell you what I want..
1. Small class size
2. Cleanliness
3. caring attitude and friendliness of staff
4. Proximity to my house
5. transport

Hope this can be of help.