If you simply want to post something, then come here if you are local. Tiny and very basic, but the staff are helpful and friendly. They don't sell much other than stamps, envelopes and post bags, so if you're wanting to do something more complex, you're better off at a bigger post office.
Small quiet post office with barely any items. Just go here to buy a stamp and post a letter. No extra items etc because shop is so small. Always get served quickly because there are not many customers. Friendly helpful staff and good prices.