I love polyantha roses. They practically take care of themselves, and easily propagated with cuttings.
Quoted from heirloomroses:
Polyantha - Compact roses that are forerunners of the modern Floribundas. The most prolific bloomers of all roses with large clusters of small flowers similar to ramblers (about 1” wide). Polyanthas are generally 2-3 feet high with foliage that is small, narrow and disease resistant; winter hardy and ideal for small gardens or pots.
More carefree roses:
http://www.pallensmith.com/articles/...r-every-garden