Ikea is very easy to find so long as you don't mind driving in Spain. Just follow the A30 around Murcia until you see the advert telling you where to get off. It's north of the city, near Churra, I think it is where the A30 and A7 join. It's a very large junction but there are good signposts for the commercial shopping centre. The Ikea website will give you directions.
As to what is open around Roda, El Patio was reopening on 8 February (I missed it), the only other restaurant in Mercadona square that was closed was Bayside and I didn't see when that was opening up again.
Not sure how long it's been since you've been over to Roda, but there's a new bar open in Mercadona square - the Comic Bar - sells German lager
A point to note is that the Mercadona supermarket is closing for refurbishment sometime in March I think.