Having said all of that, keep in mind that nothing is ever before "carved in stone". The bottom line as well as the choosing variable is what is ideal for you and also is most conducive to your lifestyle as well as preference in home furnishings.
Dimensions of small scale sectional couches have actually been clearly specified. Sectional couches in the series of 120-130" vast would certainly be suitable if you do not have the added space. If area enables, you could increase the quiting factor of the sectional couch to 145" or even 157" large.
Furthermore, if you wanted to be innovative, you can mix and match different shades as well as patterns. This would certainly provide an one-of-a-kind individual "stamp" to your home design. To sum it all up, if you have a small room you can save space with a tiny sectional couch.