Caring for rosebushes
Try a knockout rose variety for starters. They grow in a bush form and can get quite big (4' by 4' or larger) so give them some room. They do require a little care for them to grow optimally, but you probably could neglect them for the whole summer as well without too much problem, too.
They need lots of sun, but not necessarily all day. Mine get good sun until about 3PM which gives them a break from the heat of the day. I would probably shoot for about a minimum of 8 hrs of sun.
Prepare the soil by working in lots of compost and organics. Roses like to eat. Make sure the soil drains well (no standing puddles). Plant it and keep the soil moist. You should mulch around the rose to keep the soil moist. Water only if the soil starts to dry out. Water early in the day (watering in the evening under high humidity can cause fungus problems).
I put a cup of Rose-Tone on each of my bushes about once a month or thereabouts. Get it in under the plant and get it to the soil (not just on top of the mulch). Water it in after you have spread it. When I feed, I also hose off the whole plant (not just the base), which cleans off most of the spent flowers and knocks mites and other critters off the plant. If you have some clean scissors you can cut off the old flowers but it isn't completely necessary with knockouts. Just do it when you think of it.
These things will take off when put in the right conditions, so stand back. Mine are just in their first summer and are 3+ feet tall and loaded with flowers. They are a bit stalky, but I'll prune for shape in late winter before buds form next year.