Ypacarai is a small town around 40km from Asunción, the capital of Paraguay. Buses pass through it on the way to San Bernardino and other destinations to the east. It is very small, but quite pleasant. A nice place to stop for an hour if you have the time.
Buses from Asuncion or Aregua to destinations east of Ypacarai lake will stop here - Ypacarai is on the large, well paved main road.
On foot. Everything is walking distance.
Look around, have lunch and move on.
Limited number of craft stores; minimarkets and pharmacies.
Several hamburguesa/lomito places and street stalls.
Small bars with tables and chairs outside.
The only hotel in town appears to be very much closed. Aregua or San Bernardino are much better options for sleeping.
Buses pass through going to Asuncion and San Bernardino, and many other towns to the east and north of the lake.