Sattva Lake Ridge: Misleading carpet area, hidden costs

Did a site visit to Sattva Lake Ridge on Saturday. Brochures mein carpet area acha dikhaya tha, but on paper it's looking smaller than my current 2BHK. Builder sales team ne hidden charges bataye jo pehle nahi the. Is this price jump worth it? I'm upgrading from a 2BHK. Anyone faced this?