We opted for a double room with lounge access. The room was spacious for Tokyo standard and it was spotless. The staff were extremely helpful and spoke good English. The access to the lounge was totally worth it - we could see the Tokyo Tower from there and the food and drinks were great. Highly recommend and would definitely stay again for our next visit to Tokyo.
It was a good experience stayed in Royal Park hotel, room is clean and tidy, got a 20% discount voucher and tried the teppanyaki lunch, it was delicious. The only comment is no USB port for charging and cannot wireless output the video from mobile phone to TV.