I don't know about the weather in Bangalore but here is what my knowledge about rubber wood. It is generally very brittle and is generally polished in natural shade which is white/cream hence is pretty difficult to maintain.
Also make sure that sofa set is in solid wood as quite a few shopkeepers pass away compressed board(MDF/Particle) also as rubber wood. I would strictly advise you against compressed wood products as they have a small life and is generally not repairable if anything gets scratched/damaged.
Also these days what is in is straight line furniture which is generally found in full covered sofa sets. If you want i can help you with few pics.