K.V.
Arlington Park in EC, on Arlington a few blocks north of Moeser, is fab, as long as it's a good weather day. Also, the newly revamped Cerrito Vista Park has an amazing new structure, a smaller "baby" structure, and a nice level picnic/jumper area nearby. It's also easy to find. On Moeser a few blocks east of Richmond. Both have washrooms, as long as someone in your party has the EC park washroom key. Albany parks are usually so busy, it might feel a little crowded, so these two EC park suggestions are probably better. Enjoy!