The rooms have a Thai-style, are nice, with air-con, and a reasonable shower. Mosquitoes are not a problem because if you ask they spray insecticide and there are mosquito nets around the bed, and because of air-con they don't bite you. And the beach in front is really beautiful and not crowded.
Long tails take you to Ton Sai and you can ask for a private or shared long-tail to visit other islands and they're just in front of the hotel.
The hotel has a bar, restaurant, mini-market.
There is a fire show very nice (bit scarring) in another hotel next to this.
But...
The staff at Paradise Pearl receives you very badly, and with indifference. Not even a smile, or 'you're welcome', when you say 'thank you' (reception, restaurant, everywhere).
They insist to clean the room even if you say you want it later. Once i asked for they cleaning on the afternoon and 1 hour later (11.30) kind of 'expulsed' from the rooms.
But, unfortunately, this attitudes happen in all Kho Phi Phi place. I try to understand the reason (tourist invasion, disrespect with their culture by some people, etc.), but definitely the way they treat tourists is really bad in comparison to other Thai cities or other Asian countries.
Food at restaurant and breakfast is OK.
And, don't get the tours with this hotel! We booked in a place ~ 30 mts from the hotel, and the woman who sold us gave us better price and a long-tail that departed in the time we chose (6am) to Koh Phi Phi Ley - Lagoon - many snorkel sites - Monkey island (4 hours tours), and to the East part of Koh Phi Phi (4 hours) on the day before. In the hotel they said the same tour only could depart 8.30 am, and for a higher price.
Other bad points:
Wi-fi never worked on my computer, only in my cell phone.