Hi its possible to from KL to visit TAMAN NEGARA and to come back same day?
Also any tip (accommodation,gastronomy,sightseeing) about Georgetown & KL
Thank you

No,its too far...by public transport for sure.I guess by taxi/private car you could go for a day trip,but it is hardly worth it......you need to get into the NP to see the good stuff,not just hang around at the gate ;-)
I don't think it's possible to have a day visit to Taman Negara from KL as it's too far. You may overnight at Taman Negara for a few days.
For Georgetown, Penang, there are various range of hotels, from budget hotels like Good Hope Inn, Penang YMCA, to luxury hotels like Traders Hotel which is located at the heart of city center, near to few shopping malls, as well as lots of luxury hotels at Gurney area like G Hotel, Evergreen Laurel Hotel, Northam All Suite, and many more.In Georgetown, you may walk around the town or ride a "beca" or trishaw. Gurney Drive is near to Georgetown and on its way to Batu Feringghi.
Regards