Hi
Unfortunately the shop we bought our furniture from has changed owner so I don't feel I can recommend it. However - for everything else.....
Murcia and Almeria have the large stores Leroy Merlins, Ikea etc - but I wanted to decorate and furnish our villa with a bit more individuality. But a lot depends on whether you are going to rent out the property (and therefore want something reasonably priced and easily replaced ) or live in it permanently.
Personally we have used the stores in Aguilas for furniture, bedding, new kitchen. It may not have the huge stores - but for quality , price and helpfulness I prefer to shop there.
The electrical shop in Terreros ( sorry can't remember the name - but next door to the Heladeria) is great. They may not be the cheapest but are generally competitive - and they are very helpful indeed.
Also - anyone with a sat tv will know that after a few days of high winds the dish may 'shift' a little and the signal is lost. They have a little gizmo which enables them to put it back on track.
Lopez's in Mojacar sells everything for repairs. decorating, gardening etc....plus garden furniture , household wares, electricals and white goods. THe store is packed with very useful and reasonably priced stuff. We have spent a small fortune there - any screws, piping, attachments that any handy man needs is there!!!! BUT be warned - I have heard that the electical goods are occasionally faulty. We have bought a couple of minor items ( heater and fan) which did not work. They replaced them , no problem, but I'd rather not have the hassle.
Also beware of garden furniture, from any outlet. For such an 'outdoorsy' kind of country we were amazed at the low quality and high cost of patio furniture. The plastic sets may look robust etc- but out in the hot sun the plastic becomes brittle and snaps. We have ended up buying the outdoor furniture in the UK and taking them over in the back of the car, (we have an estate) and on the return journey we fill up with tiles , and wine and ceramics and wine and beer and wine.