It's not the biggest or most populous cat cafe in town, but the vivacious, outgoing (and English-speaking) proprietor helps make this a comfortable spot to hang out for an hour. Asakusa Nekoen ("Cat Park") also serves alcohol - beers and canned cocktails are Y400 - as well as the usual soft drinks (Y150 each).
There were fifteen resident cats when we visited, including one very playful two-month-old kitten, but since this is a rescue-cat cafe the population varies as new cats come in and other cats are adopted. The playroom itself is relatively small, with seating for around six or seven visitors at a time. Visitors and cats can enjoy a view of Tokyo Skytree, which is about fifteen minutes away on foot.
See more photos and details at Animal Cafes.com.