I would say to look at some comparable condos to yours on MLS. In the kitchen, are your cabinets, flooring, and lighting as nice as the comparables that have granite? If so, I would probably put the granite in. If not, consider whether upgrading the cabinets at the same time makes sense for you, since you shouldn't put granite on crappy cabinets.
I would do the bathroom upgrade. You can buy a whole new vanity with a nice cabinet, lots of storage, and granite top for ~$500, maybe less (check lowes). Figure in another few hundred for getting it installed and its worth it just to have the space for you, plus it'll look good later. If I was ripping out the vanity, I'd probably put tile on the floor at the same time if it doesn't already have it. A few hundred for install, plus the cost of materials. You can get tile from $0.50 to $50 per square foot, so spend some time and find something reasonable that you like.
edited to add: this is the vanity I've used for similar projects in the past, its $248 for the 31 inch width, obviously size depends on your bathroom.
http://www.lowes.ca/bathroom-vanitie...ductItemsImage