Excellent stay. So convenient. We stayed in 1 bedroom villa with 4 adults, one 4 yr, and one infant (crib). The room provided plenty of space for our arrangement. The elevators were pretty quick. We rarely had to wait. Our room was on 11th floor, so on way down, the elevator was typically empty when boarding (if on lower floor, sometimes pretty full by the time we got down to a lower floor, but rare). We ate at Contempo cafe a few times; good. Steak 71 is excellent. We had breakfast at Chef Mickey's once since it where were staying at resort, but it was least favorite of any character dining (we have done all character dining except Akershus and Chef Mickey's is clearly last place for character experience from what we have done - but kids may rank differently). I would recommend Disney add a coffee shop in Bay Lake. Having to walk to Contemporary just to grab coffee (at Contemporary Grounds) was a bit inconvenient. They have coffee maker in room, but prefer a better cup. Adding a mobile coffee stand just in morning hours would be enough.
Walking to Magic Kingdom was short and easy, and very nice that we had our own security check point for stroller inspection (way faster than checking at front entrance to park on early entry). On the return from MK, we would just the monorail since Contemporary Hotel was first stop on the monorail (last stop on way to MK, so walking to MK then monorail on return was best).
Heading to Epcot, the ticket and transportation (where switching to Epcot monorail) is the first stop from Contemporary; so it is fast getting to Epcot. But on return, not so fast since you have to stop at the other resorts and MK on return, and the stops can be very slow. On one trip on return from Epcot, instead of getting on the resort loop at the ticket and transportation center, we boarded the express monorail to MK, then got on the resort loop monorail at MK (then one stop to Contemporary). That saved a little time but was extra work.
To other parks and Disney Springs, we used bus transportation which was fine.