My fiance and I have an old rotary phone from my parents' house in our office and it looks great--the only problem is that it rings so loud that we had to unplug it!
I have a red Ericofon and it's one of the things I would save if my house is on fire!! I love it to pieces, here in Portugal they are about €200, I got one in Barcelona for €80, which would have been a bargain if I wasn't a student back then (sandwiches the rest of the trip, you know what I mean...). But I don't regret it (even if today it sits there on the credenza, unplugged, since I don't have a phone line...oh well)!