I flew from London on MH, booking economy return. I managed to upgrade both legs on MH Upgrade for £800 each way - pretty good value. 
 

The nicer hotels in KL have spas (sauna, steam, jacuzzi etc) for guests, usually with outside memberships. Notable examples are Mandarin Oriental, Hilton/Meridien, Shangrila, Grand Hyatt and Sheraton. They can all be very active for hook ups. Weekends are especially fun as Malaysians like to do KL staycations and other Asians hop over for a cheap weekend. KL hotels are absurdly good value compared to other Asian cities. 
 

There's plenty of rent boys on Grindr. Always ask if they are MB (money boy). Some non pros will just ask for 100-150 myr to help them out, the pros ask 250-400myr. 
 

No issues bringing guests to rooms. Ive stayed at all the above hotels over the years. 
 

I tried the massage place in Fahrenheit 88. Boy fucked me beautifully after nice massage for a decent tip. No luck in other 'mens' spas' - not even HE. 
 

Some of the skankier straight massage places on Bukit Bintang have masseurs keen to play. It's pot luck though. Use your gaydar before agreeing for massage. If they tout for  body massage, not foot, then it's more likely they're looking to play and earn a tip. 50myr is enough. 
 

 

I want to do Malaysia 🇲🇾in August 

I just done a 3 hour stopover there

and gorgeous guys some of indian background ,half Malay half indian

Saunas are a "hit n miss" , you could score 3 times one night and other times none , depends what your into 

I could of scored 20 times a night last week at Sansuk sauna in Pattaya if I was into guys over 60👴

 

I’ve got a trip there planned. How did you meet guys on Grindr with it being banned? Was a vpn easy to use?

Grindr works just fine.  Always check if they want money though. Hotel saunas are my favourite pick up places. Gat saunas are active too. 

Gay bars???