Cell Phone, Madrid
Miscellaneous: I had lots of trouble with cell phone rates in Spain and used a company called apelcom. I have included my personal blog that talks about my cell phone situation and also the website for the company i ended up using. Hopes this helps someone!
Luggage and bags:
If you are gonna stay long enough here and need to use a phone all the time. Don't worry about bringing your own cell phone with you, just hire one when arriving.
Take a look at http://www.onspanishtime.com/web/index.htm