+1 to the comments about Regus. While some of the spaces are really well designed & in perfect locations, their billing systems were so broken that I got out of my contract as fast as I could. They couldn't even charge credit cards automatically each month, and they accidentally leaked their entire Australian client list in the To line of an email (then tried to fix it by using the Outlook "Recall This Message" feature).

[Since then I've opted to work from cafes, shopping malls that have started encouraging laptop workers, and a 'coworking' space I found that was mostly empty.]