Add spaces: Roomfacilities:Bathroom,Carpeted,Electrickettle,Flat-screenTV,Freetoiletries,Heating,SatelliteChannels,Shower,Toilet

Answer: Room facilities: Bathroom, Carpeted, Electric kettle, Flat-screen TV, Free toiletries, Heating, Satellite Channels, Shower, Toilet

Add spaces: ThisbecameknownasHilbert'sFifthProblem.

Answer: This became known as Hilbert 's Fifth Problem.

Add spaces: OneeasywayisbyparticipatingintheInternationalSTANDUPtoBullyingDay.

Answer:
One easy way is by participating in the International STAND UP to Bullying Day.