Egypt. I toured parts of the country with friends, visiting Cairo, Sharm el Sheikh, Dahab and Nuweiba. Every time we stepped out of our accomodation, we felt like we immediately became the target for scammers and hawkers. Just walking down the street became a generally unpleasant experience.
Switzerland. Expensive, boring and miserable.
Monaco. I visited twice for work and was highly unimpressed. Ugly and hugely overpriced.