The part of the city that is attractive and worth sightseeing is relatively small and can be covered on foot unless you are really really tired. Even in that case taxis are an easier option than renting a car. Some taxis are less comfortable (or the driver may not speak English or they may haggle with you a lot) so I would advice you download Taxify (an Estonian equivalent to Uber; Tbilisi does not have Uber) but it's entirely up to you. Taxi drivers are notorious for charging foreigners more than the locals.

In terms of what to see - Start in the area of Sulphur Baths (Abanotubani) and walk your way up to Kote Apkhazi (formerly Leselidze) street towards the Freedom Square. Alternatively, take a cable car from the Europe Sq (near Abanotubani) to the Narikala Fortress, have a look over the city and then walk down to the Freedom Square (it's not that difficult). Then continue on to Rustaveli Avenue, at the end of it, walk down to the Elbakidze descent towards Galaktioni bridge, reach the Marjanishvili Sq and then either left or right on Aghmashenebeli Avenue. To the right is probably better. Ask around for Fabrika, check out an industrial loft turned into an artsy place, and then find your way back to the hotel. You'll have seen bits and pieces of old and new. That should be enough for one day.

Thank you all especially Timo & Faith, I'll surely contact you before arriving.

My contact details
fkomuldas@tbilizmir.com
LinkedIn Fatih Komuldas

Hello

I work here for international company as expat and I have been here for a month and will stay another 11 months . I have one year contract. If your plan for Tbilisightseeing will be at weekend I'd love to accompany with you your wife your family. 2 weeks ago My wife and my daughter came and visited me in Tbilisi and we did the same 3 nights in Guaduri and 1 night in Tbilisi. I will share my contaCT with u and if you like I share everyting I know Tbilisi.please send me mail and tell me your interest. I would like help you

By the way Please visit my site under construction www.tbilizmir.com
It is all about 2 lovely cities Tbilisi and Izmir my hometown in Turkey

Hallo I am maia from georgia I have big company travel agency and apartments in georgia and making trips around Georgian welcome to Georgeia Www.paradisotour.ge

Hi S,
You can rent a car from Airport it's will cost you € 45.44 EURO a day + deposit, paper work pick up, drop off. and before you find out where to go and how to get there time is over. in another hand i can offer you pick up from Airport, i can show you all around Tbilisi + Mtskheta and drive back to your hotel in Tbilisi for $150 USD. Here is my mobile:+995 599632002 if you are interested add me on whatsapp or on Viber. or skype: temosologa have a nice trip :)

Hello :)
Here is What i can advais :)
https://likealocalguide.com/tbilisi/tours/all-of-tbilisi-one-day-tour