Maybe a bit out of you walking range... I spent many times in Pinnacle Lumpini (You can book it through Agoda, but not via booking.com), but it's just one station from Saladeng via subway. I spent many times there because it was in walking distance to Babylon (RIP). The rooms are still ok, the breakfast is still surprisingly good and the clientele is still 30% gay (CN, TW, SG and US/Europeans). I also booked it for my 2024 trip, because is so affordable. Even I already know that I will not stay there for most of the time, it's good to have a home base where you can come back at any time if you do spontaneous trips. Probably not what you are looking for, but just wanted to mentioned it anyway.