Access point on 2 floors

Hello, i need to provide wi-fi access to our company premises which is made of 2 floors.
Could anybody give some suggestion/examples on possible infrastructure solution?

thanks in advance

Hello, i need to provide wi-fi access to our company premises which is made of 2 floors.
Could anybody give some suggestion/examples on possible infrastructure solution?

More information is necessary about the environment (area m2, walls, number of clients etc.),
one RouterBOARD 4xx series is enough usually.

Ground floor is about 300mq with no walls but glasses to separate rooms.
First floor is about the same, 3 rooms with a mix of walls and glasses.
Plus there is a big room (around 800 mq) with no walls and no glasses.

Clients are not going to be many, let’s say between 10 to 20.

I was wondering how many RBs are needed , if i need to create a backbone and then local access point for each floor (plus the big room) and what kind of antenna.
I guess distance from routeboard and antenna can’t be long.

Do you want me to draw a diagram and post it here?

any suggestion??