Could anyone suggest a nice/good hotel in Barcelona?

I've just discovered that I am pregnant and I was planning a holiday to Cuba this summer - not anymore! lol
We've decided to do a 4nt or maybe a wk in Barca around the dates July 20 - Aug 1st I'll be around 23-24wks gone
Can anyone suggest a nice hotel, not too expensive, central location.
Thanks

When I was in Barcelona I stayed in a pensionne (sorry the spelling is probably off). The Spanish people are just lovely and the family I stayed with was no exception.

http://www.hotelcontinental.com/

Very nice & great locale...they have 2 locations with hotel continental palacete being a little more upscale