We stayed here for our daughter's graduation from Barnard, and it could not have been a better experience.
It's a big, sunny apartment with two generous bedrooms, a big living, an actual formal dining room and a very adequate kitchen. The apartment was so comfortable (and very, very clean) and we were perfectly located for all the graduation festivities at Columbia. The owners were so gracious and accommodating, and we already are recommending this apartment to friends and family.
The apartment is beautifully decorated -- lots of interesting pictures on the walls, and plenty of good books to read. It was nice having access to WiFi and cable.
The formal dining room was a great place for our family to gather to plan each day every morning. And when my husband had to catch up on some work, he simply closed off the french doors to the dining room and enjoyed the quiet.
The apartment is very close to Broadway and the subway, which was tremendously convenient.
My only caution would be that the master bedroom is VERY bright, so prepare to be up with the sun!