Hello Pquin,
I live 1/2 hour from Granollers and also studied the Celta course there, this Feb past. (I assume it’s with Cambridge!)
Most private or agency will ask you for a deposit, and yes it can be up to three months! Prices tend to be pretty much the same until you get about 45mins from BCN city. There is a very good train network. I know many people who commute daily. It really does depend on whether you want to experience living in BCN center or not. Also if you commute it will cost you about 20? a week so that has to be taken into consideration. Most people will share a large flat with others, I did for two years and it wasn’t so bad, this tends to be the cheapest option, you still have to pay the deposit, but prices for a room tend to be about 250-400.
Finding a decent 2 bed flat is quite tough. There are many suburbs very close to BCN that might be worth looking at, Badalona is a nice town and 20 mins from BCN on train and it’s also linked by the tube.
On either side of BCN (but still within the greater city limits) you have St. Adri? and L’Hospitalet, both are very much high rise blocks and not particually pretty, but there tends to be a lot of offers, here your spainsh will have to be good!.
In the center of BCN I would avoid the gothic quarter aka ciutat vella, ( unless you want to be bang in the center of 5am loud conversations and people peeing on your doorstep!) Also the housing there is very old, so they have a great style but awful plumbing!.
The Eixample is a good area, central with great bars, The Flats are enormous and you tend to have five or six sharing, however it is also v expensive, of course.
Sant Andreu (which is to the north of the city) is very pleasant, and deffo worth a look. Many people like the Poble Nou (Sant Marti), it’s in the east next to the coast so your very close to the beach.
Barceloneta is quite degraded (when it comes to finding accomodation) a bit like the gothic quarter.
Gracia is very much the arty center of BCN, quite pricey but very chic! Though it has to be said that it has lost a little of it’s charm over the last five years.
Sants is close to the main train station and also a decent area to live. Sarria; unless daddy is bill gates I wouldn’t bother ?????!
To the west of Barcelona is Les Planes and La Floresta, these are small towns on the other side of the Tibidadbo mountain, there are large houses that have been converted into flats, here you will find a mix of squatters and rich folk, I lived in La floresta for two years and it is like living in the country but only 15mins in the car or 25 on the train to BCN. The offers are limited but worth checking out, you might get lucky!
Zona Franca is the more industrial port part of BCN, there is a lot of building going on, but I think it’s probably the cheapest (decent) in BCN right now. High rise blocks and industrial estates. Note: there is no tube to this part of the city(not until 2013 anyway)
Check these links out, they should give you an idea of prices, and you can filter “barrios” (neighbourhoods)
http://english.habitaclia.com/
http://www.loquo.com/en_us (this is very much a classifieds ad site)
Well hope I haven’t gone on to long!!! and I hope it has been of some assistence. If you are doing the CELTA with cambridge, you’ll love it, the guys are great and for your info, I found a job starting in sept, and all the guys who studied with me are now working as teachers!
So best of luck!
ChrisM