If you want a place near the silt strider and the teletransportation, why don't you use the Mage Guild? You have 2 bedrooms with chests, one with a desk, and you have (after you disarm and unlock the door) a storage room with crates, baskets and sacks. I put items inside all containers and after 15 days they didn't disappeared. Very handy until you get your manor from Redoran.
Someone can confirm it? Because I never used it before...