This is not meant to be a which is the best lounge or argument over lounges in general but more what made a particular lounge good in personal opinion, what is the one aspect that makes you smile or still remember a particular lounge.
I have travelled extensively for work and to be honest most lounges blend, even if I have frequented regularly but for some reason some have stood out for silly reasons
obviously I’ll start (not in order of preference)
1. AA LHR T3: I loved the sweet (candy) bar, my inner child was brought straight back to childhood cinema trips with pick and mix sweet bags, when travelling through T3 I still (did) make a point to call in and make a sweet bag (or 2/3) to watch movies on the plane, my guilty pleasure
2. Helsinki airport (not sure of lounge name but on BA/AA stock) had saunas and it was an experience and made me love Finnair even more (service was above the best of IAG by far), the sauna experience was another level of relaxation and made the 5 flight sector relaxing and enjoyable, it was a personal best of 12 flight in 11 days but I did not suffer the fatigue I would normally do, that transit via the sauna both energised and relaxed.