Hello Piyu, If you can share some pictures of the room and other furnishings that you are going to use, people may offer their suggestions. CSDS.

Vijaya, You should ideally put the hob and chimney on the adjacent wall. However, Kaushik had put his chimney on the window. You may check with him about the effectiveness/feedback of this. Check out this discussion on Houzz - https://ml.houzz.com/1JH54421tL Thanks, Nitin

Visual below is similar case like your preference of using wooden texture laminate with black counter top & lighter floor. Check out misty oak, pine, birch... in laminates!

have made 3 options of the layout. in all 3 options, the best position of the media unit is on the small wall. note - L shaped sofa is in Martin colour , hanging seating is in red colour and media unit is in blue colour. option 1- the hanging seating is kept near the window but the movement will be parallel to the window (i.e. from sofa to TV unit direction) option 2- the hanging seating is kept opposite the sofa wall between the living and dining area (as a divider and for more free space) option 3- the hanging seating is again on the window wall but the movement is perpendicular to the window wall. have attached some images for your reference. do get back to us in case of any further doubts. thanks and regards, deSigneR