Well there is a couple ways of putting that in if you want to say that you really like to sleep then you say 'Me gusta dormir!'
pronounced [meh - goo - stah - dorrr - mirrr]
ITmickey has a point too you can also say 'Soy dormilona'
which means like she said your a sleeper. That's pronounced
[Soy (Self Explanatory ) - dorr - me - low - nah]
If you say that you sleep alot it's
'Yo duermo mucho' that's pronounced
[Yo - dwer - mo - moo - cho]