Argos and Museum Hotel are far and away the top two options in the area. Below that you have lots in Gorem that are of similar quality. I would describe them as rustic luxury. They are nice enough, but definitely not modern luxury. That is part of the appeal of the area, though. I went last minute a few weeks ago and ended up booking Kelebek Cave Hotel (their sister Sultan Suites was full), and it was absolutely adequate. The property is beautiful, and you have amazing views of the balloons and town. It has a good mix of regular rooms and cave rooms. You also get full access to Sultan Suites, which was great. Also, 3-4 days is more than enough. That will give you a day to relax if you want.