I don't know the price now, however, I can give the reference price in 2003 for my flat (larger than yours, with 3 rooms + 2 wash rooms)
全屋牆及天花 partly 批熨 + wall paper
拆廚房=>open 廚房(all new) +renew all hot and cool pipes (inside the wall) and 改positions + 做全部櫥櫃及吊櫃 (about 11-12 feets), 無縫枱面及星盆 (however, there are cracks now), 鋁質假天花, 鋪牆磚及地磚及包裝燈
2厠所(all new)=> 做鋁假天花, 換馬桶, 洗手盆連櫃, 做缸, 做木門, 全鋪牆及地磚, 包埋一般的花灑及水龍頭及 + renew all hot and cool pipes (inside the wall) and 改positions
全屋鋪高温磚(I chose the expensive one, looks like the rocks)及裝about40個電制位+4 個network +4個TV signal+4個telephone 電制位+地腳線 +全屋 renew all the electric supple, telephone signal, internet signal (through pipes inside the wall) and change positions