We stayed at Go Apartments in Warsaw for one night and had a mixed experience overall.
On the positive side, the check-in and check-out process was uncomplicated and efficient. The apartment itself was spacious, quiet, and had the necessary basic equipment, including a washing machine. The location was also convenient for exploring the city.
Unfortunately, there were also several downsides. The bed was honestly catastrophic — far too soft and much too small for two people, which made sleeping uncomfortable even for a single night.
Breakfast is served externally and only starts at 8:00 AM, which is rather late if you have plans in the morning. In addition, one of the kitchen power sockets was defective, and surprisingly there was no coffee machine in the apartment.
Overall, the apartment was acceptable for a short one-night stay thanks to the good location and easy organisation, but we personally would not have wanted to stay there much longer because of the comfort issues.