I keep get a line popping up on my screen in the living room of my house saying "mattress request"

[Daydream Irelund]

I get this "mattress request" when I am in one part of my house.  If I leave the room it goes away but never goes away from the room.  It is annoying and I want to find out how to get rid of it. 

[Rolig Loon]

Popping up on your screen, or popping up in chat?  If it's on your screen, just floating around, it's hover text.  You'll need to locate the prim that it is in -- I hope that you have mod permission on it -- and either modify the script that generated the text (if it is still there) or add a script like this to replace it:

default{    state_entry()    {        llSetText(" ",<1.0,1.0,1.0>,1.0);        llRemoveInventory(llGetScriptName());    }}

 If it's not floating around but it saying its message in chat, you'll need to locate whatever object is saying it and then mute (block) it.