I've seen mine sleep in a number of different positions from simply lowering themselves down to where their bellies were on the floor and their head was relaxed out in front of them to laying on their sides.
Yes; guinea pigs will lie down to rest or sleep.
Yes, it means it likes you.
Guinea pigs sleep in there cage on the floor.....Or if you dont like that you can buy little guinea pig beds at the petstore for luxury...
play till they sleep
Yes.
Guinea pigs are not nocturnal neither do they sleep at night always. They are most active at dawn and dusk. When you see a guinea pig laying or sitting still with their eyes open, they may be sleeping. Guinea pigs can sleep with their eyes open. I think they just take a lot of naps and can be awake and playing at almost any time if they are given enough resting time on the side.
yes
yes
They sleep at night.
They are not strictly nocturnal or diurnal, but are more active in the daytime.
Mostly they either eat and sleep.
Yes.
they sleep and eat all day
Yes, they do. They sleep in the morning,but you might not see them. & also, they sleep with their eyes closed.