For those farming housing decor:
You are NOT able to do this on your main character.
Create a lvl 1 worgen and start in Gilneas not exile's reach.(mage went quite fast) Follow the story untill you completed the quest to rescue 4 sailors form the ocean. After this go to Gwen Armstead in Duskhaven take all 3 quests she gives.
Make sure to complete 'The Hayward Brothers' and the 'The Crowley Orchard' quest lines before doing the 'Grandma Wahl' quests. All 3 quest lines needs to be completed.
This way you will save Grandma last and get the 'Ready to go' quest needed to unlock the housing decor.
If you however managed to mess up the order or came to read this comment to late and you now have either: 'Horses for Duskhaven' or the 'Escape by Sea' quest, simply abandon it and go pick up the Ready to go Quest from Grandma Wahl.
DO NOT turn inn 'Horses for Duskhaven' or 'Escape by Sea' to Gwen Armstead, if you do then you need to remake a new lvl 1 worgen character and start again (like i had to).
Afther this, if you go north east of Gilneas city and complete the 'Last MeaL' Last Meal you wil also unlock [item=245518]
If you were sucessful, you wil be able to purchase [item=245620] and [item=245518] from [npc=50307] and [npc=252520] in Darnassus .