Plusses: well-equipped kitchen & cooking basics; lots of flat surfaces (makes keeping your stuff organized so much easier); heat works well; w/d & dishwasher; basic and inexpensive furniture, but versatile--easy to set up work spaces, for example; feeling of spaciousness even though small; and location, location, location.
Minuses: if you need a good bed for a good night's sleep, you may want to look elsewhere. We were comfortable enough (bedroom) for 3 nights, but the bed is creaky and kind of lumpy and, well...let's just say it has a personality that may not suit people who need something close to hotel mattress perfection. The entry fob can be tricky.