Questions & Answers about Bu koltuk rahat; akşam burada dinleniyorum.
In Turkish, a present-tense “to be” verb is usually not written in simple statements.
So Bu koltuk rahat literally works as “This armchair (is) comfortable.”
You can add a copular ending for emphasis or formality:
- Bu koltuk rahattır. = “This armchair is (indeed) comfortable.” (more formal/definitive)
- Bu koltuk rahat. = neutral, everyday speech
Koltuk commonly means an armchair or a comfortable seat (often upholstered). Depending on context it can also be used for a seat (e.g., on a bus/plane), but in a home setting with rahat + dinleniyorum, it strongly suggests armchair rather than a dining chair.