Need a plumber to unblock kitchen sink in flat

Hi, I’m looking for a reliable person to unblock my kitchen sink in a rented flat. The kitchen sink drains slowly and recently sometimes starts to back up when I run hot water. I’ve tried with a plunger and a basic drain cleaner, but it didn’t help. Please bring appropriate tools (plumber’s snake or auger) and be prepared to check for minor blockages in the trap. I’d prefer a same-day or next-day visit if possible, and access to the unit is straightforward. If you can provide a quick estimate before arriving, that would be great.