Yes, I've stayed at Lily's. I agree, beach front rooms for sure. If you like to meet people get a downstairs one as a lot of people who walk along the beach will stop and sit at one of the tables and chat with you.
If you want privacy, select an upstairs unit. Nice balcony and catches the breeze.
About the noise - if you close the windows and use the air conditioner (low is all you will need) it isn't so bad.
I loved being in #8 - lower beach and right next to the restaurant. Rey and his lovely wife will spoil you with their good coffee, JohnnyCakes with butter and great jam. If you are lucky enough to go in lobster season the lobster omelets are to die for - and very inexpensive.