My 3.5 year old daughter asks to come here all the time. Sometimes she's okay with one hr, sometimes she asks to stay longer (she never lasts longer than two hrs of jump time). Its always a good deal.
Inside is spacious, not too hot, fairly well maintained & with a friendly staff. Nothing super fancy but the price is right & it impresses my daughter enough that this is her most requested activity. This place is a lifesaver on hot days.