Most often referred just as the "Kiev's Bath" which is a direct translation from Russian "Киевская баня". This sulfur bathhouse is located on Kiev's street (left side cross-street from David Aghmanashebeli avenue)
I have been heading here since days we had a nice apartment in this neighborhood on Rome street, discovered first at the end of 2012.
Some would call Kiev's bathhouse old and neglected (and that's true), some would call them a good and cheap alternative to those more expensive (and fancier) located in the Tbilisi Old Town.
Facade of Kiev's bathhouse in Tbilisi
In 2019 there have been some repair works done, and now bathhouse looks decent. There have been added huge informative posters (saying it's a sulfur bath) to the broken window boxes. I really love this creative way how to achieve result with a limited budget.
Renovated Kiev's bathhouse in Tbilisi
One hour bathing here will cost you 10 GEL ($4.50 / EUR 4.10) ( the price has been increased to GEL 20 per hour for a single bath since the start of 2016, the price is still valid in 2019) and it's more a way locals do it. They have more expensive and probably cheaper options also.
Sulfur pool
Pools are pretty small, but quite OK for one/two persons
Wall tiles
The bathhouse is run in two shifts which means they are working 24/7, by days there are nice old ladies and in the evenings/nights there are a bit scary man running bathhouse. In times when ladies shift is running, baths are clean, in times when it's a man shift - it's 50/50 :) I doubt any personel here speaks any English, some basic Georgian or Russian language knowledge is needed.
Anteroom
You can order a cup of Turkish coffee from old ladies running this bath, it will cost you 1 GEL.