Since you haven't specified your budget, recommending will be a little difficult, so we'll give you a variety of options. You should strongly consider the Classic 350/Bullet 350 from Royal Enfield, as well as any of the Honda CB350 models in the cruiser space. These bikes have lovely seating and suspension comfort and are good to ride inside the city as well as on the highway - so long as you don't go over 100kph too often. Both of these have genuine highway capability, loaded up with a pillion, and can also handle daily commuting with ease. The adventure bikes will be more expensive to buy and run compared to the simpler, retro-styled cruisers, considering they are larger, more tech-laden offerings.