I would get it fixed the cheapest way possible. It doesn't sound like gluing it down yourself is a real fix, next cheapest is probably to find some neutral flooring to put down. If you are handy maybe you could do it yourself, something like the laminate that snaps together. Or maybe some vinyl from a discount place would work best, bonus points if you are able to install yourself, or find a handyman to save money over the professional installer. The tile just sounds expensive and time consuming. If you can do it cheap then great, but I have a hard time seeing that being cheaper than vinyl or laminate.