Pen & Inc in NTU and One North offers a cozy, relaxed ambiance with a diverse menu featuring Western, Tex-Mex, and Indian-inspired dishes. Visitors praise the friendly staff, reasonable prices, generous portions, and entertainment options like pool and darts. The restaurant is ideal for casual meetups, family gatherings, and informal dates, with many noting its quiet environment and good service. Some concerns include occasional slow service and variability in food quality, but overall, it provides a pleasant dining and social experience in a peaceful setting.